It's about one-and-one-fifth times as deep as The Challenger Deep (Marianas Trench)
In other words, 647.740 chains is 1.1952 times the depth of The Challenger Deep (Marianas Trench), and the depth of The Challenger Deep (Marianas Trench) is 0.83668 times that amount.(near Marianas Islands, a.k.a. Ladrones Islands, northwestern Pacific Ocean) (depth below sea level)
The Challenger Deep, at the southern end of the Marianas Trench, reaches a depth of 541.940 chains below sea level. The first manned expedition to the bottom of Challenger Deep took 4 hours and 48 minutes in 1960. This was the only manned descent to the floor of the Trench until 2012, when director James Cameron made the trip; several other descents have been made since then.
It's about one-and-one-fifth times as tall as Maxwell Montes
In other words, 647.740 chains is 1.2 times the height of Maxwell Montes, and the height of Maxwell Montes is 0.83 times that amount.(Ishtar Terra, Venus)
Maxwell Montes rises to a total height of 550 chains. Since Venus does not seem to have the kind of tectonic activity which gives rise to mountains on Earth, the origin of the Venusian mountain remains the subject of some dispute.
It's about one-and-two-fifths times as tall as a Mauna Loa
In other words, 647.740 chains is 1.421 times the height of a Mauna Loa, and the height of a Mauna Loa is 0.7037 times that amount.(Hawaii) (Hawaiian island volcano) (total height from seafloor)
Mauna Loa, one of the five volcanoes which forms the island of Hawaii and the tallest mountain in total height in the world, rises to 457.30 chains above the seafloor. The peak of Loa is home to the approximately 6,000 sq. m (0.6 ha) Lake Waiau, one of the highest altitude lakes in the United States outside of Colorado.
It's about one-and-a-half times as tall as Mount Everest
In other words, 647.740 chains is 1.47256 times the height of Mount Everest, and the height of Mount Everest is 0.679089 times that amount.(a.k.a. Mount Chomolungma, a.k.a. Sagarmatha, a.k.a. Mount Qomolangma, a.k.a. सगरमाथा, a.k.a. Chajamlungma, a.k.a. ཇོ་མོ་གླང་མ, a.k.a. 珠穆朗玛峰, a.k.a. Zhūmùlǎngmǎ Fēng) (Sagarmatha Zone, Nepal and Tibet, China) (to summit, excluding snow depth)
Mount Everest rises 439.8740 chains above sea level at its summit. The plate tectonics of the Indian subcontinent continuously alter the mountain's peak â€” raising it by 0.000198839 chains and shifting it to the northeast by 0.000223694 chains each year.
It's about one-and-nine-tenths times as tall as Aconcagua
In other words, 647.740 chains is 1.8717 times the height of Aconcagua, and the height of Aconcagua is 0.53427 times that amount.(a.k.a. Cerro Aconcagua) (Mendoza, Argentina)
Aconcagua measures 346.07 chains height at its peak. Although there is no definitive evidence that members of the indigenous Inca civilization ever reached the peak the mountain, numerous archeological sites have been found on the slopes of the mountain, including a naturally-embalmed Incan mummy was discovered on a 258.490 chains high ridge.
It's about one-and-nine-tenths times as long as The Las Vegas Strip
In other words, 647.740 chains is 1.9 times the length of The Las Vegas Strip, and the length of The Las Vegas Strip is 0.53 times that amount.(Las Vegas Boulevard S and W from Russel Rd to Sahara Ave)(Paradise, Nevada through Winchester, Nevada).
Although technically located beyond the city limits of Las Vegas (along with the well-known "Welcome to Fabulous Las Vegas" sign), the stretch of road known as the "Las Vegas Strip" runs 340 chains along Las Vegas Boulevard South and West from Russel Road at the south end to Sahara Avenue at the north end. The casinos and hotels on the Strip display an estimated total of 1,200,000 chains of neon light tubing.
It's about two times as long as Calangute Beach
In other words, 647.740 chains is 2 times the length of Calangute Beach, and the length of Calangute Beach is 0.5 times that amount.(Goa, India) (approximate)
One of the most popular tourist destinations in Goa, Calangute Beach, the "Queen of Beaches," stretches about 7 km in length.