12618589 has 4 divisors (see below), whose sum is σ = 12626560. Its totient is φ = 12610620.

The previous prime is 12618577. The next prime is 12618601. The reversal of 12618589 is 98581621.

12618589 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (12618577) and next prime (12618601).

It is a cyclic number.

It is not a de Polignac number, because 12618589 - 2⁷ = 12618461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12618569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 717 + ... + 5074.

It is an arithmetic number, because the mean of its divisors is an integer number (3156640).

Almost surely, 2^12618589 is an apocalyptic number.

It is an amenable number.

12618589 is a deficient number, since it is larger than the sum of its proper divisors (7971).

12618589 is an equidigital number, since it uses as much as digits as its factorization.

12618589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7970.

The product of its digits is 34560, while the sum is 40.

The square root of 12618589 is about 3552.2653335583. The cubic root of 12618589 is about 232.8110547393.

The spelling of 12618589 in words is "twelve million, six hundred eighteen thousand, five hundred eighty-nine".