76980656 has 20 divisors (see below), whose sum is σ = 149339400. Its totient is φ = 38441472.

The previous prime is 76980649. The next prime is 76980661. The reversal of 76980656 is 65608967.

It is a self number, because there is not a number n which added to its sum of digits gives 76980656.

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 in 3 ways as a sum of consecutive naturals, for example, 12275 + ... + 17453.

It is an arithmetic number, because the mean of its divisors is an integer number (7466970).

Almost surely, 2^76980656 is an apocalyptic number.

It is an amenable number.

76980656 is a deficient number, since it is larger than the sum of its proper divisors (72358744).

76980656 is a wasteful number, since it uses less digits than its factorization.

76980656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6116 (or 6110 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 76980656 is about 8773.8620914623. The cubic root of 76980656 is about 425.3964577343.

The spelling of 76980656 in words is "seventy-six million, nine hundred eighty thousand, six hundred fifty-six".