687914763204 has 12 divisors (see below), whose sum is σ = 1605134447504. Its totient is φ = 229304921064.

The previous prime is 687914763197. The next prime is 687914763271. The reversal of 687914763204 is 402367419786.

It is a tau number, because it is divible by the number of its divisors (12).

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, 28663115122 + ... + 28663115145.

Almost surely, 2^687914763204 is an apocalyptic number.

It is an amenable number.

687914763204 is an abundant number, since it is smaller than the sum of its proper divisors (917219684300).

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

687914763204 is a wasteful number, since it uses less digits than its factorization.

687914763204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57326230274 (or 57326230272 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 57.

The spelling of 687914763204 in words is "six hundred eighty-seven billion, nine hundred fourteen million, seven hundred sixty-three thousand, two hundred four".