79717512 has 96 divisors (see below), whose sum is σ = 236390400. Its totient is φ = 22329216.

The previous prime is 79717507. The next prime is 79717529. The reversal of 79717512 is 21571797.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61689 + ... + 62967.

It is an arithmetic number, because the mean of its divisors is an integer number (2462400).

Almost surely, 2^79717512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79717512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118195200).

79717512 is an abundant number, since it is smaller than the sum of its proper divisors (156672888).

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

79717512 is a wasteful number, since it uses less digits than its factorization.

79717512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355 (or 1344 counting only the distinct ones).

The product of its digits is 30870, while the sum is 39.

The square root of 79717512 is about 8928.4663856678. The cubic root of 79717512 is about 430.3791715896.

The spelling of 79717512 in words is "seventy-nine million, seven hundred seventeen thousand, five hundred twelve".