87408657 has 24 divisors (see below), whose sum is σ = 144580800. Its totient is φ = 49848480.

The previous prime is 87408653. The next prime is 87408707. The reversal of 87408657 is 75680478.

It is not a de Polignac number, because 87408657 - 2² = 87408653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87408653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40594 + ... + 42692.

It is an arithmetic number, because the mean of its divisors is an integer number (6024200).

Almost surely, 2^87408657 is an apocalyptic number.

It is an amenable number.

87408657 is a deficient number, since it is larger than the sum of its proper divisors (57172143).

87408657 is a wasteful number, since it uses less digits than its factorization.

87408657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773 (or 2770 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 87408657 is about 9349.2597033134. The cubic root of 87408657 is about 443.7974636264.

The spelling of 87408657 in words is "eighty-seven million, four hundred eight thousand, six hundred fifty-seven".