79540705 has 16 divisors (see below), whose sum is σ = 101291904. Its totient is φ = 59754240.

The previous prime is 79540667. The next prime is 79540717. The reversal of 79540705 is 50704597.

It is a de Polignac number, because none of the positive numbers 2^k-79540705 is a prime.

It is a Duffinian number.

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, 52894 + ... + 54376.

It is an arithmetic number, because the mean of its divisors is an integer number (6330744).

Almost surely, 2^79540705 is an apocalyptic number.

It is an amenable number.

79540705 is a deficient number, since it is larger than the sum of its proper divisors (21751199).

79540705 is a wasteful number, since it uses less digits than its factorization.

79540705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 79540705 is about 8918.5595810086. The cubic root of 79540705 is about 430.0607539901.

The spelling of 79540705 in words is "seventy-nine million, five hundred forty thousand, seven hundred five".