72740179 has 2 divisors, whose sum is σ = 72740180. Its totient is φ = 72740178.

The previous prime is 72740159. The next prime is 72740201. The reversal of 72740179 is 97104727.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72740179 - 2¹¹ = 72738131 is a prime.

It is a super-2 number, since 2×72740179² = 10582267281904082, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72740159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36370089 + 36370090.

It is an arithmetic number, because the mean of its divisors is an integer number (36370090).

Almost surely, 2^72740179 is an apocalyptic number.

72740179 is a deficient number, since it is larger than the sum of its proper divisors (1).

72740179 is an equidigital number, since it uses as much as digits as its factorization.

72740179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 72740179 is about 8528.7853179688. The cubic root of 72740179 is about 417.4374945569.

The spelling of 72740179 in words is "seventy-two million, seven hundred forty thousand, one hundred seventy-nine".