87957618 has 64 divisors (see below), whose sum is σ = 208023552. Its totient is φ = 24272640.

The previous prime is 87957607. The next prime is 87957619. The reversal of 87957618 is 81675978.

It is not an unprimeable number, because it can be changed into a prime (87957619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203863 + ... + 204293.

It is an arithmetic number, because the mean of its divisors is an integer number (3250368).

Almost surely, 2^87957618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87957618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104011776).

87957618 is an abundant number, since it is smaller than the sum of its proper divisors (120065934).

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

87957618 is a wasteful number, since it uses less digits than its factorization.

87957618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599.

The product of its digits is 846720, while the sum is 51.

The square root of 87957618 is about 9378.5722794037. The cubic root of 87957618 is about 444.7246000381.

The spelling of 87957618 in words is "eighty-seven million, nine hundred fifty-seven thousand, six hundred eighteen".