79651605 has 32 divisors (see below), whose sum is σ = 142000128. Its totient is φ = 37793600.

The previous prime is 79651601. The next prime is 79651669. The reversal of 79651605 is 50615697.

It is not a de Polignac number, because 79651605 - 2² = 79651601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79651601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2620 + ... + 12890.

It is an arithmetic number, because the mean of its divisors is an integer number (4437504).

Almost surely, 2^79651605 is an apocalyptic number.

It is an amenable number.

79651605 is a deficient number, since it is larger than the sum of its proper divisors (62348523).

79651605 is a wasteful number, since it uses less digits than its factorization.

79651605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10337.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 79651605 is about 8924.7747870745. The cubic root of 79651605 is about 430.2605325774.

The spelling of 79651605 in words is "seventy-nine million, six hundred fifty-one thousand, six hundred five".