79831680 has 64 divisors (see below), whose sum is σ = 254469600. Its totient is φ = 21287936.

The previous prime is 79831669. The next prime is 79831691. The reversal of 79831680 is 8613897.

It is an interprime number because it is at equal distance from previous prime (79831669) and next prime (79831691).

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18870 + ... + 22709.

Almost surely, 2^79831680 is an apocalyptic number.

It is an amenable number.

79831680 is an abundant number, since it is smaller than the sum of its proper divisors (174637920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79831680 is a wasteful number, since it uses less digits than its factorization.

79831680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41601 (or 41589 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 79831680 is about 8934.8575814055. The cubic root of 79831680 is about 430.5845304461.

The spelling of 79831680 in words is "seventy-nine million, eight hundred thirty-one thousand, six hundred eighty".