72879713 has 2 divisors, whose sum is σ = 72879714. Its totient is φ = 72879712.

The previous prime is 72879701. The next prime is 72879721. The reversal of 72879713 is 31797827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72046144 + 833569 = 8488^2 + 913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72879713 is a prime.

It is a super-2 number, since 2×72879713² = 10622905133924738, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72879743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36439856 + 36439857.

It is an arithmetic number, because the mean of its divisors is an integer number (36439857).

Almost surely, 2^72879713 is an apocalyptic number.

It is an amenable number.

72879713 is a deficient number, since it is larger than the sum of its proper divisors (1).

72879713 is an equidigital number, since it uses as much as digits as its factorization.

72879713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 44.

The square root of 72879713 is about 8536.9615789226. The cubic root of 72879713 is about 417.7042408487.

The spelling of 72879713 in words is "seventy-two million, eight hundred seventy-nine thousand, seven hundred thirteen".