79640652 has 48 divisors (see below), whose sum is σ = 228714752. Its totient is φ = 21003840.

The previous prime is 79640633. The next prime is 79640657. The reversal of 79640652 is 25604697.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 79640652.

It is not an unprimeable number, because it can be changed into a prime (79640657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35374 + ... + 37557.

Almost surely, 2^79640652 is an apocalyptic number.

It is an amenable number.

79640652 is an abundant number, since it is smaller than the sum of its proper divisors (149074100).

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

79640652 is a wasteful number, since it uses less digits than its factorization.

79640652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72958 (or 72956 counting only the distinct ones).

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

The square root of 79640652 is about 8924.1611370481. The cubic root of 79640652 is about 430.2408097707.

The spelling of 79640652 in words is "seventy-nine million, six hundred forty thousand, six hundred fifty-two".