79980868 has 48 divisors (see below), whose sum is σ = 158957568. Its totient is φ = 34884000.

The previous prime is 79980851. The next prime is 79980877. The reversal of 79980868 is 86808997.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260371 + ... + 260677.

It is an arithmetic number, because the mean of its divisors is an integer number (3311616).

Almost surely, 2^79980868 is an apocalyptic number.

It is an amenable number.

79980868 is a deficient number, since it is larger than the sum of its proper divisors (78976700).

79980868 is a wasteful number, since it uses less digits than its factorization.

79980868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 55.

The square root of 79980868 is about 8943.2023347345. The cubic root of 79980868 is about 430.8525863974.

The spelling of 79980868 in words is "seventy-nine million, nine hundred eighty thousand, eight hundred sixty-eight".