687112432 has 10 divisors (see below), whose sum is σ = 1331280368. Its totient is φ = 343556208.

The previous prime is 687112379. The next prime is 687112441. The reversal of 687112432 is 234211786.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21472248 + ... + 21472279.

Almost surely, 2^687112432 is an apocalyptic number.

It is an amenable number.

687112432 is a deficient number, since it is larger than the sum of its proper divisors (644167936).

687112432 is a wasteful number, since it uses less digits than its factorization.

687112432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42944535 (or 42944529 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 687112432 is about 26212.8295305944. The cubic root of 687112432 is about 882.4212041667.

The spelling of 687112432 in words is "six hundred eighty-seven million, one hundred twelve thousand, four hundred thirty-two".