72574939 has 2 divisors, whose sum is σ = 72574940. Its totient is φ = 72574938.

The previous prime is 72574903. The next prime is 72574963. The reversal of 72574939 is 93947527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72574939 - 2¹⁷ = 72443867 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72574969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36287469 + 36287470.

It is an arithmetic number, because the mean of its divisors is an integer number (36287470).

Almost surely, 2^72574939 is an apocalyptic number.

72574939 is a deficient number, since it is larger than the sum of its proper divisors (1).

72574939 is an equidigital number, since it uses as much as digits as its factorization.

72574939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 46.

The square root of 72574939 is about 8519.0926160008. The cubic root of 72574939 is about 417.1211647132.

The spelling of 72574939 in words is "seventy-two million, five hundred seventy-four thousand, nine hundred thirty-nine".