680645884 has 12 divisors (see below), whose sum is σ = 1191355200. Its totient is φ = 340258688.

The previous prime is 680645851. The next prime is 680645897. The reversal of 680645884 is 488546086.

680645884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×680645884² = 926557638812282912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14037 + ... + 39475.

It is an arithmetic number, because the mean of its divisors is an integer number (99279600).

Almost surely, 2^680645884 is an apocalyptic number.

It is an amenable number.

680645884 is a deficient number, since it is larger than the sum of its proper divisors (510709316).

680645884 is a wasteful number, since it uses less digits than its factorization.

680645884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32132 (or 32130 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 49.

The square root of 680645884 is about 26089.1909418441. The cubic root of 680645884 is about 879.6442622050.

The spelling of 680645884 in words is "six hundred eighty million, six hundred forty-five thousand, eight hundred eighty-four".