87165996 has 48 divisors (see below), whose sum is σ = 221491200. Its totient is φ = 26574912.

The previous prime is 87165989. The next prime is 87166007. The reversal of 87165996 is 69956178.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21 + ... + 13203.

It is an arithmetic number, because the mean of its divisors is an integer number (4614400).

Almost surely, 2^87165996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87165996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110745600).

87165996 is an abundant number, since it is smaller than the sum of its proper divisors (134325204).

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

87165996 is a wasteful number, since it uses less digits than its factorization.

87165996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13238 (or 13236 counting only the distinct ones).

The product of its digits is 816480, while the sum is 51.

The square root of 87165996 is about 9336.2731322514. The cubic root of 87165996 is about 443.3863977537.

The spelling of 87165996 in words is "eighty-seven million, one hundred sixty-five thousand, nine hundred ninety-six".