87982864 has 10 divisors (see below), whose sum is σ = 170466830. Its totient is φ = 43991424.

The previous prime is 87982849. The next prime is 87982883. The reversal of 87982864 is 46828978.

It can be written as a sum of positive squares in only one way, i.e., 67371264 + 20611600 = 8208^2 + 4540^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2749449 + ... + 2749480.

It is an arithmetic number, because the mean of its divisors is an integer number (17046683).

Almost surely, 2^87982864 is an apocalyptic number.

It is an amenable number.

87982864 is a deficient number, since it is larger than the sum of its proper divisors (82483966).

87982864 is a wasteful number, since it uses less digits than its factorization.

87982864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5498937 (or 5498931 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 52.

The square root of 87982864 is about 9379.9181233100. The cubic root of 87982864 is about 444.7671449345.

The spelling of 87982864 in words is "eighty-seven million, nine hundred eighty-two thousand, eight hundred sixty-four".