87885618 has 8 divisors (see below), whose sum is σ = 175771248. Its totient is φ = 29295204.

The previous prime is 87885601. The next prime is 87885647. The reversal of 87885618 is 81658878.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

87885618 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 7323796 + ... + 7323807.

It is an arithmetic number, because the mean of its divisors is an integer number (21971406).

Almost surely, 2^87885618 is an apocalyptic number.

87885618 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

87885618 is a wasteful number, since it uses less digits than its factorization.

87885618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14647608.

The product of its digits is 860160, while the sum is 51.

The square root of 87885618 is about 9374.7329561967. The cubic root of 87885618 is about 444.6032199428.

The spelling of 87885618 in words is "eighty-seven million, eight hundred eighty-five thousand, six hundred eighteen".