79772616 has 96 divisors (see below), whose sum is σ = 269380800. Its totient is φ = 20718720.

The previous prime is 79772597. The next prime is 79772617. The reversal of 79772616 is 61627797.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (79772617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1651 + ... + 12738.

It is an arithmetic number, because the mean of its divisors is an integer number (2806050).

Almost surely, 2^79772616 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 79772616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134690400).

79772616 is an abundant number, since it is smaller than the sum of its proper divisors (189608184).

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

79772616 is a wasteful number, since it uses less digits than its factorization.

79772616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14419 (or 14412 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 79772616 is about 8931.5517128884. The cubic root of 79772616 is about 430.4783139695.

The spelling of 79772616 in words is "seventy-nine million, seven hundred seventy-two thousand, six hundred sixteen".