79623623 has 4 divisors (see below), whose sum is σ = 83814360. Its totient is φ = 75432888.

The previous prime is 79623619. The next prime is 79623637. The reversal of 79623623 is 32632697.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32632697 = 1361 ⋅23977.

It is not a de Polignac number, because 79623623 - 2² = 79623619 is a prime.

It is a super-2 number, since 2×79623623² = 12679842679292258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79623613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2095340 + ... + 2095377.

It is an arithmetic number, because the mean of its divisors is an integer number (20953590).

Almost surely, 2^79623623 is an apocalyptic number.

79623623 is a deficient number, since it is larger than the sum of its proper divisors (4190737).

79623623 is a wasteful number, since it uses less digits than its factorization.

79623623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4190736.

The product of its digits is 81648, while the sum is 38.

The square root of 79623623 is about 8923.2069907629. The cubic root of 79623623 is about 430.2101424635.

The spelling of 79623623 in words is "seventy-nine million, six hundred twenty-three thousand, six hundred twenty-three".