79331617 has 8 divisors (see below), whose sum is σ = 82823400. Its totient is φ = 75890304.

The previous prime is 79331587. The next prime is 79331621. The reversal of 79331617 is 71613397.

It can be written as a sum of positive squares in 4 ways, for example, as 11943936 + 67387681 = 3456^2 + 8209^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79331617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79331627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9388 + ... + 15709.

It is an arithmetic number, because the mean of its divisors is an integer number (10352925).

Almost surely, 2^79331617 is an apocalyptic number.

It is an amenable number.

79331617 is a deficient number, since it is larger than the sum of its proper divisors (3491783).

79331617 is a wasteful number, since it uses less digits than its factorization.

79331617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25235.

The product of its digits is 23814, while the sum is 37.

The square root of 79331617 is about 8906.8297951628. The cubic root of 79331617 is about 429.6835909207.

The spelling of 79331617 in words is "seventy-nine million, three hundred thirty-one thousand, six hundred seventeen".