87565388 has 12 divisors (see below), whose sum is σ = 153704712. Its totient is φ = 43649760.

The previous prime is 87565369. The next prime is 87565399. The reversal of 87565388 is 88356578.

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, 31745 + ... + 34392.

It is an arithmetic number, because the mean of its divisors is an integer number (12808726).

Almost surely, 2^87565388 is an apocalyptic number.

It is an amenable number.

87565388 is a deficient number, since it is larger than the sum of its proper divisors (66139324).

87565388 is a wasteful number, since it uses less digits than its factorization.

87565388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66472 (or 66470 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 50.

The square root of 87565388 is about 9357.6379498247. The cubic root of 87565388 is about 444.0625605108.

The spelling of 87565388 in words is "eighty-seven million, five hundred sixty-five thousand, three hundred eighty-eight".