12644589 has 16 divisors (see below), whose sum is σ = 17199104. Its totient is φ = 8262000.

The previous prime is 12644579. The next prime is 12644591. The reversal of 12644589 is 98544621.

12644589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12644589 - 2⁹ = 12644077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46524 + ... + 46794.

It is an arithmetic number, because the mean of its divisors is an integer number (1074944).

Almost surely, 2^12644589 is an apocalyptic number.

It is an amenable number.

12644589 is a deficient number, since it is larger than the sum of its proper divisors (4554515).

12644589 is a wasteful number, since it uses less digits than its factorization.

12644589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528.

The product of its digits is 69120, while the sum is 39.

The square root of 12644589 is about 3555.9230869073. The cubic root of 12644589 is about 232.9708437302.

The spelling of 12644589 in words is "twelve million, six hundred forty-four thousand, five hundred eighty-nine".