87983816 has 16 divisors (see below), whose sum is σ = 168083100. Its totient is φ = 43161664.

The previous prime is 87983807. The next prime is 87983849. The reversal of 87983816 is 61838978.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 70728100 + 17255716 = 8410^2 + 4154^2 .

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 3 ways as a sum of consecutive naturals, for example, 103331 + ... + 104178.

Almost surely, 2^87983816 is an apocalyptic number.

It is an amenable number.

87983816 is a deficient number, since it is larger than the sum of its proper divisors (80099284).

87983816 is a wasteful number, since it uses less digits than its factorization.

87983816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207568 (or 207564 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 87983816 is about 9379.9688698844. The cubic root of 87983816 is about 444.7687490983.

The spelling of 87983816 in words is "eighty-seven million, nine hundred eighty-three thousand, eight hundred sixteen".