79670785 has 4 divisors (see below), whose sum is σ = 95604948. Its totient is φ = 63736624.

The previous prime is 79670683. The next prime is 79670797. The reversal of 79670785 is 58707697.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58707697 = 541 ⋅108517.

It can be written as a sum of positive squares in 2 ways, for example, as 37368769 + 42302016 = 6113^2 + 6504^2 .

It is a cyclic number.

It is not a de Polignac number, because 79670785 - 2²¹ = 77573633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7967074 + ... + 7967083.

It is an arithmetic number, because the mean of its divisors is an integer number (23901237).

Almost surely, 2^79670785 is an apocalyptic number.

It is an amenable number.

79670785 is a deficient number, since it is larger than the sum of its proper divisors (15934163).

79670785 is a wasteful number, since it uses less digits than its factorization.

79670785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15934162.

The product of its (nonzero) digits is 740880, while the sum is 49.

The square root of 79670785 is about 8925.8492593142. The cubic root of 79670785 is about 430.2950651928.

The spelling of 79670785 in words is "seventy-nine million, six hundred seventy thousand, seven hundred eighty-five".