79015680 has 216 divisors, whose sum is σ = 288571920. Its totient is φ = 19961856.

The previous prime is 79015669. The next prime is 79015681. The reversal of 79015680 is 8651097.

79015680 is a `hidden beast` number, since 7 + 90 + 1 + 568 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79015681) 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, 4158711 + ... + 4158729.

Almost surely, 2^79015680 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 79015680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144285960).

79015680 is an abundant number, since it is smaller than the sum of its proper divisors (209556240).

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

79015680 is an equidigital number, since it uses as much as digits as its factorization.

79015680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 79015680 is about 8889.0764424658. The cubic root of 79015680 is about 429.1124291697.

The spelling of 79015680 in words is "seventy-nine million, fifteen thousand, six hundred eighty".