72245613 has 16 divisors (see below), whose sum is σ = 105627456. Its totient is φ = 43559040.

The previous prime is 72245549. The next prime is 72245623. The reversal of 72245613 is 31654227.

It is not a de Polignac number, because 72245613 - 2⁶ = 72245549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72245623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945 + ... + 12057.

It is an arithmetic number, because the mean of its divisors is an integer number (6601716).

Almost surely, 2^72245613 is an apocalyptic number.

It is an amenable number.

72245613 is a deficient number, since it is larger than the sum of its proper divisors (33381843).

72245613 is a wasteful number, since it uses less digits than its factorization.

72245613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11324.

The product of its digits is 10080, while the sum is 30.

The square root of 72245613 is about 8499.7419372590. The cubic root of 72245613 is about 416.4892792294.

The spelling of 72245613 in words is "seventy-two million, two hundred forty-five thousand, six hundred thirteen".