79670811 has 16 divisors (see below), whose sum is σ = 116115840. Its totient is φ = 48189120.

The previous prime is 79670803. The next prime is 79670821. The reversal of 79670811 is 11807697.

It is not a de Polignac number, because 79670811 - 2³ = 79670803 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79670811.

It is not an unprimeable number, because it can be changed into a prime (79670821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16656 + ... + 20898.

It is an arithmetic number, because the mean of its divisors is an integer number (7257240).

Almost surely, 2^79670811 is an apocalyptic number.

79670811 is a deficient number, since it is larger than the sum of its proper divisors (36445029).

79670811 is a wasteful number, since it uses less digits than its factorization.

79670811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4826.

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 79670811 is about 8925.8507157581. The cubic root of 79670811 is about 430.2951120007.

The spelling of 79670811 in words is "seventy-nine million, six hundred seventy thousand, eight hundred eleven".