79611720 has 64 divisors (see below), whose sum is σ = 246551040. Its totient is φ = 20544000.

The previous prime is 79611677. The next prime is 79611761. The reversal of 79611720 is 2711697.

It is a super-2 number, since 2×79611720² = 12676051922716800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6981 + ... + 14420.

It is an arithmetic number, because the mean of its divisors is an integer number (3852360).

Almost surely, 2^79611720 is an apocalyptic number.

It is an amenable number.

79611720 is an abundant number, since it is smaller than the sum of its proper divisors (166939320).

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

79611720 is a wasteful number, since it uses less digits than its factorization.

79611720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21446 (or 21442 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 79611720 is about 8922.5399971084. The cubic root of 79611720 is about 430.1887039074.

The spelling of 79611720 in words is "seventy-nine million, six hundred eleven thousand, seven hundred twenty".