87290568 has 32 divisors (see below), whose sum is σ = 242474400. Its totient is φ = 29096784.

The previous prime is 87290531. The next prime is 87290627. The reversal of 87290568 is 86509278.

87290568 is a `hidden beast` number, since 87 + 2 + 9 + 0 + 568 = 666.

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, 201846 + ... + 202277.

It is an arithmetic number, because the mean of its divisors is an integer number (7577325).

Almost surely, 2^87290568 is an apocalyptic number.

It is an amenable number.

87290568 is an abundant number, since it is smaller than the sum of its proper divisors (155183832).

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

87290568 is a wasteful number, since it uses less digits than its factorization.

87290568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404138 (or 404128 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 87290568 is about 9342.9421490235. The cubic root of 87290568 is about 443.5975169274.

The spelling of 87290568 in words is "eighty-seven million, two hundred ninety thousand, five hundred sixty-eight".