680116894864 has 45 divisors (see below), whose sum is σ = 1448487383539. Its totient is φ = 309127549280.

The previous prime is 680116894859. The next prime is 680116894903. The reversal of 680116894864 is 468498611086.

The square root of 680116894864 is 824692.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 36277077 + ... + 36295819.

Almost surely, 2^680116894864 is an apocalyptic number.

680116894864 is the 824692-nd square number.

It is an amenable number.

680116894864 is an abundant number, since it is smaller than the sum of its proper divisors (768370488675).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680116894864 is an frugal number, since it uses more digits than its factorization.

680116894864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37516 (or 18756 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 61.

The spelling of 680116894864 in words is "six hundred eighty billion, one hundred sixteen million, eight hundred ninety-four thousand, eight hundred sixty-four".