87566004 has 36 divisors (see below), whose sum is σ = 224471520. Its totient is φ = 28776720.

The previous prime is 87565999. The next prime is 87566047. The reversal of 87566004 is 40066578.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 87566004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14574 + ... + 19685.

It is an arithmetic number, because the mean of its divisors is an integer number (6235320).

Almost surely, 2^87566004 is an apocalyptic number.

It is an amenable number.

87566004 is an abundant number, since it is smaller than the sum of its proper divisors (136905516).

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

87566004 is a wasteful number, since it uses less digits than its factorization.

87566004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34340 (or 34335 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 87566004 is about 9357.6708640559. The cubic root of 87566004 is about 444.0636017970.

The spelling of 87566004 in words is "eighty-seven million, five hundred sixty-six thousand, four".