72658279 has 2 divisors, whose sum is σ = 72658280. Its totient is φ = 72658278.

The previous prime is 72658249. The next prime is 72658297. The reversal of 72658279 is 97285627.

Together with next prime (72658297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (97285627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72658279 - 2¹³ = 72650087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72658249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36329139 + 36329140.

It is an arithmetic number, because the mean of its divisors is an integer number (36329140).

Almost surely, 2^72658279 is an apocalyptic number.

72658279 is a deficient number, since it is larger than the sum of its proper divisors (1).

72658279 is an equidigital number, since it uses as much as digits as its factorization.

72658279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 46.

The square root of 72658279 is about 8523.9825785838. The cubic root of 72658279 is about 417.2807679243.

The spelling of 72658279 in words is "seventy-two million, six hundred fifty-eight thousand, two hundred seventy-nine".