72612499 has 4 divisors (see below), whose sum is σ = 72684640. Its totient is φ = 72540360.

The previous prime is 72612493. The next prime is 72612511. The reversal of 72612499 is 99421627.

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

It is a cyclic number.

It is not a de Polignac number, because 72612499 - 2²³ = 64223891 is a prime.

It is a super-2 number, since 2×72612499² = 10545150022050002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72612493) 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, 34539 + ... + 36580.

It is an arithmetic number, because the mean of its divisors is an integer number (18171160).

Almost surely, 2^72612499 is an apocalyptic number.

72612499 is a deficient number, since it is larger than the sum of its proper divisors (72141).

72612499 is a wasteful number, since it uses less digits than its factorization.

72612499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72140.

The product of its digits is 54432, while the sum is 40.

The square root of 72612499 is about 8521.2967909820. The cubic root of 72612499 is about 417.1931104344.

It can be divided in two parts, 726 and 12499, that added together give a square (13225 = 115²).

The spelling of 72612499 in words is "seventy-two million, six hundred twelve thousand, four hundred ninety-nine".