87666732 has 24 divisors (see below), whose sum is σ = 227284400. Its totient is φ = 29222208.

The previous prime is 87666721. The next prime is 87666751. The reversal of 87666732 is 23766678.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405757 + ... + 405972.

Almost surely, 2^87666732 is an apocalyptic number.

It is an amenable number.

87666732 is an abundant number, since it is smaller than the sum of its proper divisors (139617668).

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

87666732 is a wasteful number, since it uses less digits than its factorization.

87666732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811742 (or 811734 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 87666732 is about 9363.0514256838. The cubic root of 87666732 is about 444.2338067335.

The spelling of 87666732 in words is "eighty-seven million, six hundred sixty-six thousand, seven hundred thirty-two".