79681323 has 4 divisors (see below), whose sum is σ = 106241768. Its totient is φ = 53120880.

The previous prime is 79681321. The next prime is 79681331. The reversal of 79681323 is 32318697.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32318697 = 3 ⋅10772899.

It is not a de Polignac number, because 79681323 - 2¹ = 79681321 is a prime.

It is a super-2 number, since 2×79681323² = 12698226470060658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79681321) 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, 13280218 + ... + 13280223.

It is an arithmetic number, because the mean of its divisors is an integer number (26560442).

Almost surely, 2^79681323 is an apocalyptic number.

79681323 is a deficient number, since it is larger than the sum of its proper divisors (26560445).

79681323 is a wasteful number, since it uses less digits than its factorization.

79681323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26560444.

The product of its digits is 54432, while the sum is 39.

The square root of 79681323 is about 8926.4395477704. The cubic root of 79681323 is about 430.3140359673.

The spelling of 79681323 in words is "seventy-nine million, six hundred eighty-one thousand, three hundred twenty-three".