79073664 has 64 divisors (see below), whose sum is σ = 222413040. Its totient is φ = 24805376.

The previous prime is 79073641. The next prime is 79073669. The reversal of 79073664 is 46637097.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79073669) 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, 472 + ... + 12584.

Almost surely, 2^79073664 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 79073664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111206520).

79073664 is an abundant number, since it is smaller than the sum of its proper divisors (143339376).

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

79073664 is a wasteful number, since it uses less digits than its factorization.

79073664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12147 (or 12135 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 42.

The square root of 79073664 is about 8892.3373755161. The cubic root of 79073664 is about 429.2173685576.

The spelling of 79073664 in words is "seventy-nine million, seventy-three thousand, six hundred sixty-four".