686542504 has 16 divisors (see below), whose sum is σ = 1355018400. Its totient is φ = 325204272.

The previous prime is 686542477. The next prime is 686542553. The reversal of 686542504 is 405245686.

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, 2258212 + ... + 2258515.

It is an arithmetic number, because the mean of its divisors is an integer number (84688650).

Almost surely, 2^686542504 is an apocalyptic number.

It is an amenable number.

686542504 is a deficient number, since it is larger than the sum of its proper divisors (668475896).

686542504 is a wasteful number, since it uses less digits than its factorization.

686542504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4516752 (or 4516748 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 686542504 is about 26201.9561101838. The cubic root of 686542504 is about 882.1771608140.

The spelling of 686542504 in words is "six hundred eighty-six million, five hundred forty-two thousand, five hundred four".