72566536 has 32 divisors (see below), whose sum is σ = 160519680. Its totient is φ = 30096000.

The previous prime is 72566467. The next prime is 72566537. The reversal of 72566536 is 63566527.

It is not an unprimeable number, because it can be changed into a prime (72566537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19165 + ... + 22636.

It is an arithmetic number, because the mean of its divisors is an integer number (5016240).

Almost surely, 2^72566536 is an apocalyptic number.

It is an amenable number.

72566536 is an abundant number, since it is smaller than the sum of its proper divisors (87953144).

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

72566536 is a wasteful number, since it uses less digits than its factorization.

72566536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41845 (or 41841 counting only the distinct ones).

The product of its digits is 226800, while the sum is 40.

The square root of 72566536 is about 8518.5994153969. The cubic root of 72566536 is about 417.1050654716.

Subtracting from 72566536 its reverse (63566527), we obtain a palindrome (9000009).

The spelling of 72566536 in words is "seventy-two million, five hundred sixty-six thousand, five hundred thirty-six".