79714721 has 4 divisors (see below), whose sum is σ = 79781652. Its totient is φ = 79647792.

The previous prime is 79714669. The next prime is 79714729. The reversal of 79714721 is 12741797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12741797 = 509 ⋅25033.

It can be written as a sum of positive squares in 2 ways, for example, as 11833600 + 67881121 = 3440^2 + 8239^2 .

It is a cyclic number.

It is not a de Polignac number, because 79714721 - 2¹⁴ = 79698337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79714729) 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, 31646 + ... + 34071.

It is an arithmetic number, because the mean of its divisors is an integer number (19945413).

Almost surely, 2^79714721 is an apocalyptic number.

It is an amenable number.

79714721 is a deficient number, since it is larger than the sum of its proper divisors (66931).

79714721 is a wasteful number, since it uses less digits than its factorization.

79714721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66930.

The product of its digits is 24696, while the sum is 38.

The square root of 79714721 is about 8928.3100864609. The cubic root of 79714721 is about 430.3741488443.

The spelling of 79714721 in words is "seventy-nine million, seven hundred fourteen thousand, seven hundred twenty-one".