72604231 has 6 divisors (see below), whose sum is σ = 84458040. Its totient is φ = 62232156.

The previous prime is 72604219. The next prime is 72604247. The reversal of 72604231 is 13240627.

It is not a de Polignac number, because 72604231 - 2²¹ = 70507079 is a prime.

It is a super-2 number, since 2×72604231² = 10542748718202722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72604196 and 72604205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72604211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 740811 + ... + 740908.

It is an arithmetic number, because the mean of its divisors is an integer number (14076340).

Almost surely, 2^72604231 is an apocalyptic number.

72604231 is a deficient number, since it is larger than the sum of its proper divisors (11853809).

72604231 is a wasteful number, since it uses less digits than its factorization.

72604231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481733 (or 1481726 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 72604231 is about 8520.8116397442. The cubic root of 72604231 is about 417.1772753113.

Adding to 72604231 its reverse (13240627), we get a palindrome (85844858).

The spelling of 72604231 in words is "seventy-two million, six hundred four thousand, two hundred thirty-one".