87866816 has 28 divisors (see below), whose sum is σ = 174665640. Its totient is φ = 43856640.

The previous prime is 87866797. The next prime is 87866837. The reversal of 87866816 is 61866878.

It is a congruent number.

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, 59495 + ... + 60953.

Almost surely, 2^87866816 is an apocalyptic number.

It is an amenable number.

87866816 is a deficient number, since it is larger than the sum of its proper divisors (86798824).

87866816 is a wasteful number, since it uses less digits than its factorization.

87866816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412 (or 2402 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The square root of 87866816 is about 9373.7301006590. The cubic root of 87866816 is about 444.5715119640.

The spelling of 87866816 in words is "eighty-seven million, eight hundred sixty-six thousand, eight hundred sixteen".