87915860 has 12 divisors (see below), whose sum is σ = 184623348. Its totient is φ = 35166336.

The previous prime is 87915833. The next prime is 87915881. The reversal of 87915860 is 6851978.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9132484 + 78783376 = 3022^2 + 8876^2 .

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, 2197877 + ... + 2197916.

It is an arithmetic number, because the mean of its divisors is an integer number (15385279).

Almost surely, 2^87915860 is an apocalyptic number.

It is an amenable number.

87915860 is an abundant number, since it is smaller than the sum of its proper divisors (96707488).

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

87915860 is a wasteful number, since it uses less digits than its factorization.

87915860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4395802 (or 4395800 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 87915860 is about 9376.3457700748. The cubic root of 87915860 is about 444.6542110262.

The spelling of 87915860 in words is "eighty-seven million, nine hundred fifteen thousand, eight hundred sixty".