87838664 has 8 divisors (see below), whose sum is σ = 164697510. Its totient is φ = 43919328.

The previous prime is 87838627. The next prime is 87838693. The reversal of 87838664 is 46683878.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 76562500 + 11276164 = 8750^2 + 3358^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5489909 + ... + 5489924.

Almost surely, 2^87838664 is an apocalyptic number.

It is an amenable number.

87838664 is a deficient number, since it is larger than the sum of its proper divisors (76858846).

87838664 is a wasteful number, since it uses less digits than its factorization.

87838664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10979839 (or 10979835 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 50.

The square root of 87838664 is about 9372.2283369538. The cubic root of 87838664 is about 444.5240275451.

The spelling of 87838664 in words is "eighty-seven million, eight hundred thirty-eight thousand, six hundred sixty-four".