79720523 has 8 divisors (see below), whose sum is σ = 85963920. Its totient is φ = 73681920.

The previous prime is 79720519. The next prime is 79720547. The reversal of 79720523 is 32502797.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79720523 - 2² = 79720519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79720583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50390 + ... + 51947.

It is an arithmetic number, because the mean of its divisors is an integer number (10745490).

Almost surely, 2^79720523 is an apocalyptic number.

79720523 is a deficient number, since it is larger than the sum of its proper divisors (6243397).

79720523 is a wasteful number, since it uses less digits than its factorization.

79720523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102397.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 79720523 is about 8928.6350020594. The cubic root of 79720523 is about 430.3845901204.

The spelling of 79720523 in words is "seventy-nine million, seven hundred twenty thousand, five hundred twenty-three".