79613665 has 8 divisors (see below), whose sum is σ = 95584320. Its totient is φ = 63658992.

The previous prime is 79613663. The next prime is 79613713. The reversal of 79613665 is 56631697.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79613665 - 2¹ = 79613663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79613663) 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, 17166 + ... + 21304.

It is an arithmetic number, because the mean of its divisors is an integer number (11948040).

Almost surely, 2^79613665 is an apocalyptic number.

It is an amenable number.

79613665 is a deficient number, since it is larger than the sum of its proper divisors (15970655).

79613665 is a wasteful number, since it uses less digits than its factorization.

79613665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7991.

The product of its digits is 204120, while the sum is 43.

The square root of 79613665 is about 8922.6489900702. The cubic root of 79613665 is about 430.1922072033.

The spelling of 79613665 in words is "seventy-nine million, six hundred thirteen thousand, six hundred sixty-five".