89722565 has 16 divisors (see below), whose sum is σ = 109166400. Its totient is φ = 70785792.

The previous prime is 89722561. The next prime is 89722571. The reversal of 89722565 is 56522798.

It is a cyclic number.

It is not a de Polignac number, because 89722565 - 2² = 89722561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89722561) 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, 213926 + ... + 214344.

It is an arithmetic number, because the mean of its divisors is an integer number (6822900).

Almost surely, 2^89722565 is an apocalyptic number.

It is an amenable number.

89722565 is a deficient number, since it is larger than the sum of its proper divisors (19443835).

89722565 is a wasteful number, since it uses less digits than its factorization.

89722565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its digits is 302400, while the sum is 44.

The square root of 89722565 is about 9472.1995861574. The cubic root of 89722565 is about 447.6795197470.

The spelling of 89722565 in words is "eighty-nine million, seven hundred twenty-two thousand, five hundred sixty-five".