72607979 has 2 divisors, whose sum is σ = 72607980. Its totient is φ = 72607978.

The previous prime is 72607973. The next prime is 72607999. The reversal of 72607979 is 97970627.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72607979 - 2⁴ = 72607963 is a prime.

It is a super-2 number, since 2×72607979² = 10543837228928882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72607973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36303989 + 36303990.

It is an arithmetic number, because the mean of its divisors is an integer number (36303990).

Almost surely, 2^72607979 is an apocalyptic number.

72607979 is a deficient number, since it is larger than the sum of its proper divisors (1).

72607979 is an equidigital number, since it uses as much as digits as its factorization.

72607979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 333396, while the sum is 47.

The square root of 72607979 is about 8521.0315690062. The cubic root of 72607979 is about 417.1844537429.

The spelling of 72607979 in words is "seventy-two million, six hundred seven thousand, nine hundred seventy-nine".