76691332624 has 15 divisors (see below), whose sum is σ = 148591603213. Its totient is φ = 38345112448.

The previous prime is 76691332589. The next prime is 76691332631. The reversal of 76691332624 is 42623319667.

The square root of 76691332624 is 276932.

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., 76408016400 + 283316224 = 276420^2 + 16832^2 .

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 2 ways as a sum of consecutive naturals, for example, 1073112 + ... + 1142344.

Almost surely, 2^76691332624 is an apocalyptic number.

76691332624 is the 276932-nd square number.

It is an amenable number.

76691332624 is a deficient number, since it is larger than the sum of its proper divisors (71900270589).

76691332624 is an frugal number, since it uses more digits than its factorization.

76691332624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138474 (or 69235 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 49.

Multiplying 76691332624 by its sum of digits (49), we get a square (3757875298576 = 1938524²).

The spelling of 76691332624 in words is "seventy-six billion, six hundred ninety-one million, three hundred thirty-two thousand, six hundred twenty-four".