72558696 has 128 divisors (see below), whose sum is σ = 219283200. Its totient is φ = 19568640.

The previous prime is 72558691. The next prime is 72558713. The reversal of 72558696 is 69685527.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72558691) 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, 258076 + ... + 258356.

It is an arithmetic number, because the mean of its divisors is an integer number (1713150).

Almost surely, 2^72558696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72558696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109641600).

72558696 is an abundant number, since it is smaller than the sum of its proper divisors (146724504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72558696 is a wasteful number, since it uses less digits than its factorization.

72558696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 375 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 72558696 is about 8518.1392334242. The cubic root of 72558696 is about 417.0900437565.

It can be divided in two parts, 7255 and 8696, that added together give a palindrome (15951).

The spelling of 72558696 in words is "seventy-two million, five hundred fifty-eight thousand, six hundred ninety-six".