79787756 has 12 divisors (see below), whose sum is σ = 141918000. Its totient is φ = 39239760.

The previous prime is 79787753. The next prime is 79787761. The reversal of 79787756 is 65778797.

It is not an unprimeable number, because it can be changed into a prime (79787753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163256 + ... + 163743.

It is an arithmetic number, because the mean of its divisors is an integer number (11826500).

Almost surely, 2^79787756 is an apocalyptic number.

It is an amenable number.

79787756 is a deficient number, since it is larger than the sum of its proper divisors (62130244).

79787756 is a wasteful number, since it uses less digits than its factorization.

79787756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327064 (or 327062 counting only the distinct ones).

The product of its digits is 5186160, while the sum is 56.

The square root of 79787756 is about 8932.3992297702. The cubic root of 79787756 is about 430.5055456593.

The spelling of 79787756 in words is "seventy-nine million, seven hundred eighty-seven thousand, seven hundred fifty-six".