87005976 has 32 divisors (see below), whose sum is σ = 218727600. Its totient is φ = 28840320.

The previous prime is 87005969. The next prime is 87006001. The reversal of 87005976 is 67950078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5671 + ... + 14358.

Almost surely, 2^87005976 is an apocalyptic number.

It is an amenable number.

87005976 is an abundant number, since it is smaller than the sum of its proper divisors (131721624).

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

87005976 is a wasteful number, since it uses less digits than its factorization.

87005976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20219 (or 20215 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 87005976 is about 9327.6993948133. The cubic root of 87005976 is about 443.1149075082.

The spelling of 87005976 in words is "eighty-seven million, five thousand, nine hundred seventy-six".