79521696 has 96 divisors (see below), whose sum is σ = 239500800. Its totient is φ = 25643520.

The previous prime is 79521679. The next prime is 79521709. The reversal of 79521696 is 69612597.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

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, 25300 + ... + 28268.

It is an arithmetic number, because the mean of its divisors is an integer number (2494800).

Almost surely, 2^79521696 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 79521696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119750400).

79521696 is an abundant number, since it is smaller than the sum of its proper divisors (159979104).

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

79521696 is a wasteful number, since it uses less digits than its factorization.

79521696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3019 (or 3005 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 79521696 is about 8917.4938183326. The cubic root of 79521696 is about 430.0264919680.

Subtracting from 79521696 its reverse (69612597), we obtain a palindrome (9909099).

The spelling of 79521696 in words is "seventy-nine million, five hundred twenty-one thousand, six hundred ninety-six".