680686692 has 48 divisors (see below), whose sum is σ = 1828444800. Its totient is φ = 193059072.

The previous prime is 680686691. The next prime is 680686697. The reversal of 680686692 is 296686086.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (680686691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18067 + ... + 41082.

It is an arithmetic number, because the mean of its divisors is an integer number (38092600).

Almost surely, 2^680686692 is an apocalyptic number.

It is an amenable number.

680686692 is an abundant number, since it is smaller than the sum of its proper divisors (1147758108).

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

680686692 is a wasteful number, since it uses less digits than its factorization.

680686692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59300 (or 59298 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 680686692 is about 26089.9730164675. The cubic root of 680686692 is about 879.6618414909.

The spelling of 680686692 in words is "six hundred eighty million, six hundred eighty-six thousand, six hundred ninety-two".