87873864 has 32 divisors (see below), whose sum is σ = 236584320. Its totient is φ = 27038016.

The previous prime is 87873839. The next prime is 87873881. The reversal of 87873864 is 46837878.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140512 + ... + 141135.

It is an arithmetic number, because the mean of its divisors is an integer number (7393260).

Almost surely, 2^87873864 is an apocalyptic number.

It is an amenable number.

87873864 is an abundant number, since it is smaller than the sum of its proper divisors (148710456).

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

87873864 is a wasteful number, since it uses less digits than its factorization.

87873864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281669 (or 281665 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 51.

The square root of 87873864 is about 9374.1060373776. The cubic root of 87873864 is about 444.5833983483.

The spelling of 87873864 in words is "eighty-seven million, eight hundred seventy-three thousand, eight hundred sixty-four".