72593621 has 12 divisors (see below), whose sum is σ = 77511360. Its totient is φ = 67972800.

The previous prime is 72593617. The next prime is 72593627. The reversal of 72593621 is 12639527.

It is not a de Polignac number, because 72593621 - 2² = 72593617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72593627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68546 + ... + 69596.

It is an arithmetic number, because the mean of its divisors is an integer number (6459280).

Almost surely, 2^72593621 is an apocalyptic number.

It is an amenable number.

72593621 is a deficient number, since it is larger than the sum of its proper divisors (4917739).

72593621 is a wasteful number, since it uses less digits than its factorization.

72593621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324 (or 1307 counting only the distinct ones).

The product of its digits is 22680, while the sum is 35.

The square root of 72593621 is about 8520.1890237248. The cubic root of 72593621 is about 417.1569529579.

The spelling of 72593621 in words is "seventy-two million, five hundred ninety-three thousand, six hundred twenty-one".