87949864 has 16 divisors (see below), whose sum is σ = 165690720. Its totient is φ = 43765680.

The previous prime is 87949859. The next prime is 87949903. The reversal of 87949864 is 46894978.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24364 + ... + 27739.

It is an arithmetic number, because the mean of its divisors is an integer number (10355670).

Almost surely, 2^87949864 is an apocalyptic number.

It is an amenable number.

87949864 is a deficient number, since it is larger than the sum of its proper divisors (77740856).

87949864 is a wasteful number, since it uses less digits than its factorization.

87949864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52320 (or 52316 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 55.

The square root of 87949864 is about 9378.1588811451. The cubic root of 87949864 is about 444.7115312596.

The spelling of 87949864 in words is "eighty-seven million, nine hundred forty-nine thousand, eight hundred sixty-four".