87647970916 has 27 divisors (see below), whose sum is σ = 168608109817. Its totient is φ = 39837026240.

The previous prime is 87647970901. The next prime is 87647970929. The reversal of 87647970916 is 61907974678.

The square root of 87647970916 is 296054.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 87621920100 + 26050816 = 296010^2 + 5104^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6506460 + ... + 6519916.

Almost surely, 2^87647970916 is an apocalyptic number.

87647970916 is the 296054-th square number.

It is an amenable number.

87647970916 is a deficient number, since it is larger than the sum of its proper divisors (80960138901).

87647970916 is an equidigital number, since it uses as much as digits as its factorization.

87647970916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26940 (or 13470 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 64.

Multiplying 87647970916 by its sum of digits (64), we get a square (5609470138624 = 2368432²).

The spelling of 87647970916 in words is "eighty-seven billion, six hundred forty-seven million, nine hundred seventy thousand, nine hundred sixteen".