87636680 has 32 divisors (see below), whose sum is σ = 201995640. Its totient is φ = 34199040.

The previous prime is 87636677. The next prime is 87636691. The reversal of 87636680 is 8663678.

It can be written as a sum of positive squares in 4 ways, for example, as 53085796 + 34550884 = 7286^2 + 5878^2 .

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 7 ways as a sum of consecutive naturals, for example, 25079 + ... + 28358.

Almost surely, 2^87636680 is an apocalyptic number.

It is an amenable number.

87636680 is an abundant number, since it is smaller than the sum of its proper divisors (114358960).

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

87636680 is a wasteful number, since it uses less digits than its factorization.

87636680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53489 (or 53485 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 87636680 is about 9361.4464694298. The cubic root of 87636680 is about 444.1830400789.

The spelling of 87636680 in words is "eighty-seven million, six hundred thirty-six thousand, six hundred eighty".