72598391 has 2 divisors, whose sum is σ = 72598392. Its totient is φ = 72598390.

The previous prime is 72598349. The next prime is 72598429. The reversal of 72598391 is 19389527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72598391 - 2¹⁴ = 72582007 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72598321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36299195 + 36299196.

It is an arithmetic number, because the mean of its divisors is an integer number (36299196).

Almost surely, 2^72598391 is an apocalyptic number.

72598391 is a deficient number, since it is larger than the sum of its proper divisors (1).

72598391 is an equidigital number, since it uses as much as digits as its factorization.

72598391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 72598391 is about 8520.4689424937. The cubic root of 72598391 is about 417.1660896427.

The spelling of 72598391 in words is "seventy-two million, five hundred ninety-eight thousand, three hundred ninety-one".