87864016 has 10 divisors (see below), whose sum is σ = 170236562. Its totient is φ = 43932000.

The previous prime is 87863981. The next prime is 87864017. The reversal of 87864016 is 61046878.

It can be written as a sum of positive squares in only one way, i.e., 86564416 + 1299600 = 9304^2 + 1140^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87864016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87864017) by changing a digit.

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 as a sum of consecutive naturals, namely, 2745735 + ... + 2745766.

Almost surely, 2^87864016 is an apocalyptic number.

It is an amenable number.

87864016 is a deficient number, since it is larger than the sum of its proper divisors (82372546).

87864016 is a wasteful number, since it uses less digits than its factorization.

87864016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5491509 (or 5491503 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 87864016 is about 9373.5807459050. The cubic root of 87864016 is about 444.5667896144.

The spelling of 87864016 in words is "eighty-seven million, eight hundred sixty-four thousand, sixteen".