87047564 has 6 divisors (see below), whose sum is σ = 152333244. Its totient is φ = 43523780.

The previous prime is 87047563. The next prime is 87047567. The reversal of 87047564 is 46574078.

It is not an unprimeable number, because it can be changed into a prime (87047561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10880942 + ... + 10880949.

It is an arithmetic number, because the mean of its divisors is an integer number (25388874).

Almost surely, 2^87047564 is an apocalyptic number.

It is an amenable number.

87047564 is a deficient number, since it is larger than the sum of its proper divisors (65285680).

87047564 is a wasteful number, since it uses less digits than its factorization.

87047564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21761895 (or 21761893 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 87047564 is about 9329.9284027264. The cubic root of 87047564 is about 443.1854977834.

The spelling of 87047564 in words is "eighty-seven million, forty-seven thousand, five hundred sixty-four".