687727504 has 20 divisors (see below), whose sum is σ = 1332878976. Its totient is φ = 343758752.

The previous prime is 687727471. The next prime is 687727561. The reversal of 687727504 is 405727786.

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, 96777 + ... + 103639.

Almost surely, 2^687727504 is an apocalyptic number.

It is an amenable number.

687727504 is a deficient number, since it is larger than the sum of its proper divisors (645151472).

687727504 is a wasteful number, since it uses less digits than its factorization.

687727504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13134 (or 13128 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 46.

The square root of 687727504 is about 26224.5591764666. The cubic root of 687727504 is about 882.6844268364.

Subtracting from 687727504 its product of nonzero digits (658560), we obtain a square (687068944 = 26212²).

The spelling of 687727504 in words is "six hundred eighty-seven million, seven hundred twenty-seven thousand, five hundred four".