87987716 has 24 divisors (see below), whose sum is σ = 163520280. Its totient is φ = 41283072.

The previous prime is 87987707. The next prime is 87987773. The reversal of 87987716 is 61778978.

It can be written as a sum of positive squares in 4 ways, for example, as 5541316 + 82446400 = 2354^2 + 9080^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23630 + ... + 27098.

It is an arithmetic number, because the mean of its divisors is an integer number (6813345).

Almost surely, 2^87987716 is an apocalyptic number.

It is an amenable number.

87987716 is a deficient number, since it is larger than the sum of its proper divisors (75532564).

87987716 is a wasteful number, since it uses less digits than its factorization.

87987716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3863 (or 3861 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 53.

The square root of 87987716 is about 9380.1767573964. The cubic root of 87987716 is about 444.7753206573.

The spelling of 87987716 in words is "eighty-seven million, nine hundred eighty-seven thousand, seven hundred sixteen".