79222656 has 64 divisors (see below), whose sum is σ = 212584320. Its totient is φ = 26138112.

The previous prime is 79222631. The next prime is 79222657. The reversal of 79222656 is 65622297.

It is a happy number.

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

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79222657) 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, 38551 + ... + 40553.

It is an arithmetic number, because the mean of its divisors is an integer number (3321630).

Almost surely, 2^79222656 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 79222656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106292160).

79222656 is an abundant number, since it is smaller than the sum of its proper divisors (133361664).

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

79222656 is a wasteful number, since it uses less digits than its factorization.

79222656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123 (or 2111 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 79222656 is about 8900.7109828373. The cubic root of 79222656 is about 429.4867790783.

The spelling of 79222656 in words is "seventy-nine million, two hundred twenty-two thousand, six hundred fifty-six".