87538764 has 12 divisors (see below), whose sum is σ = 204257144. Its totient is φ = 29179584.

The previous prime is 87538747. The next prime is 87538771. The reversal of 87538764 is 46783578.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3647437 + ... + 3647460.

Almost surely, 2^87538764 is an apocalyptic number.

It is an amenable number.

87538764 is an abundant number, since it is smaller than the sum of its proper divisors (116718380).

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

87538764 is a wasteful number, since it uses less digits than its factorization.

87538764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7294904 (or 7294902 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 48.

The square root of 87538764 is about 9356.2152604565. The cubic root of 87538764 is about 444.0175506414.

The spelling of 87538764 in words is "eighty-seven million, five hundred thirty-eight thousand, seven hundred sixty-four".