72604208685 has 32 divisors (see below), whose sum is σ = 123348666240. Its totient is φ = 36341178368.

The previous prime is 72604208609. The next prime is 72604208689. The reversal of 72604208685 is 58680240627.

It is a cyclic number.

It is not a de Polignac number, because 72604208685 - 2⁷ = 72604208557 is a prime.

It is a super-2 number, since 2×72604208685² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72604208689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 313275 + ... + 493304.

It is an arithmetic number, because the mean of its divisors is an integer number (3854645820).

Almost surely, 2^72604208685 is an apocalyptic number.

It is an amenable number.

72604208685 is a deficient number, since it is larger than the sum of its proper divisors (50744457555).

72604208685 is a wasteful number, since it uses less digits than its factorization.

72604208685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806957.

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 72604208685 in words is "seventy-two billion, six hundred four million, two hundred eight thousand, six hundred eighty-five".