87500816 has 20 divisors (see below), whose sum is σ = 182574252. Its totient is φ = 40384896.

The previous prime is 87500807. The next prime is 87500821. The reversal of 87500816 is 61800578.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32444416 + 55056400 = 5696^2 + 7420^2 .

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, 210131 + ... + 210546.

Almost surely, 2^87500816 is an apocalyptic number.

It is an amenable number.

87500816 is an abundant number, since it is smaller than the sum of its proper divisors (95073436).

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

87500816 is a wasteful number, since it uses less digits than its factorization.

87500816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420698 (or 420692 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 87500816 is about 9354.1870838678. The cubic root of 87500816 is about 443.9533809235.

The spelling of 87500816 in words is "eighty-seven million, five hundred thousand, eight hundred sixteen".