72856499 has 4 divisors (see below), whose sum is σ = 72878640. Its totient is φ = 72834360.

The previous prime is 72856493. The next prime is 72856513. The reversal of 72856499 is 99465827.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72856499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72856493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5039 + ... + 13080.

It is an arithmetic number, because the mean of its divisors is an integer number (18219660).

Almost surely, 2^72856499 is an apocalyptic number.

72856499 is a deficient number, since it is larger than the sum of its proper divisors (22141).

72856499 is a wasteful number, since it uses less digits than its factorization.

72856499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22140.

The product of its digits is 1088640, while the sum is 50.

The square root of 72856499 is about 8535.6018534137. The cubic root of 72856499 is about 417.6598864115.

The spelling of 72856499 in words is "seventy-two million, eight hundred fifty-six thousand, four hundred ninety-nine".