79761865 has 8 divisors (see below), whose sum is σ = 95765760. Its totient is φ = 63775152.

The previous prime is 79761833. The next prime is 79761881. The reversal of 79761865 is 56816797.

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 79761865 - 2⁵ = 79761833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10662 + ... + 16528.

It is an arithmetic number, because the mean of its divisors is an integer number (11970720).

Almost surely, 2^79761865 is an apocalyptic number.

It is an amenable number.

79761865 is a deficient number, since it is larger than the sum of its proper divisors (16003895).

79761865 is a wasteful number, since it uses less digits than its factorization.

79761865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8591.

The product of its digits is 635040, while the sum is 49.

The square root of 79761865 is about 8930.9498375033. The cubic root of 79761865 is about 430.4589744998.

The spelling of 79761865 in words is "seventy-nine million, seven hundred sixty-one thousand, eight hundred sixty-five".