72565893 has 6 divisors (see below), whose sum is σ = 104817414. Its totient is φ = 48377256.

The previous prime is 72565879. The next prime is 72565903. The reversal of 72565893 is 39856527.

It is a happy number.

72565893 is a `hidden beast` number, since 7 + 2 + 565 + 89 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 61496964 + 11068929 = 7842^2 + 3327^2 .

It is not a de Polignac number, because 72565893 - 2¹⁶ = 72500357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72565093) 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, 4031430 + ... + 4031447.

It is an arithmetic number, because the mean of its divisors is an integer number (17469569).

Almost surely, 2^72565893 is an apocalyptic number.

It is an amenable number.

72565893 is a deficient number, since it is larger than the sum of its proper divisors (32251521).

72565893 is a wasteful number, since it uses less digits than its factorization.

72565893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8062883 (or 8062880 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 72565893 is about 8518.5616743673. The cubic root of 72565893 is about 417.1038335017.

The spelling of 72565893 in words is "seventy-two million, five hundred sixty-five thousand, eight hundred ninety-three".