|Cardinal||six hundred sixteen|
(six hundred and sixteenth)
|Factorization||23× 7 × 11|
616 is the 25th member of the Padovan sequence, coming after 265, 351, 465 (it is the sum of the first two of these). 616 is a polygonal number in four different ways: it is a heptagonal number, as well as 13-, 31- and 104-gonal.
The Roman numeral for 616, DCXVI, has exactly one occurrence of all symbols except for L whose value is less than 1000 (D=500, C=100, X=10, V=5, I=1).
The Number of the Beast
616 is believed by some to have been the original Number of the Beast in the Book of Revelation in the Christian Bible. Different early versions of the Book of Revelation gave different numbers, and 666 had been widely accepted as the original number. In 2005, however, a fragment of papyrus 115 was revealed, containing the earliest known version of that part of the Book of Revelation discussing the Number of the Beast. It gave the number as 616, suggesting that this may have been the original. Apparently the two different numbers reflect two different spellings of Emperor Nero/Neron's name, for which this number is believed to be a code.
Of course nothing like 616 or 666 is in the Greek text of Revelation; for place value of numbers (as in Arabic numbers) had not been adopted. Three Greek letters like 6 6 6 would more likely be interpreted as 6 + 6 + 6. And the repetition of no Greek letter-number 3 times can represent six hundred sixty-six. χξς is the number of the beast in the real book of Revelation, which is in Greek, and in ancient papyri one finds it as χξc, using a different font for stigma, the number 6 in Greek. One may not write six hundred sixty-six as ςςς nor as three digammas FFF though stigma and digamma are 6 in Greek. 
In other fields
- Earth-616 is the name used to identify the primary continuity in which most Marvel Comics' titles take place.
- 616 film, a medium film format.
- Area code 616, an area code in Michigan.
- Papyrus Reveals New Clues to Ancient World
- The Other Number of the Beast
- Prof Dale Martin's Lecture 23 - "Apocalyptic and Resistance" (from "Introduction to the New Testament History and Literature", RLST 152)
- 666 - professors explain Roulette and Nero in detail; numberphile.com