12664365 has 32 divisors (see below), whose sum is σ = 23402496. Its totient is φ = 5728320.

The previous prime is 12664361. The next prime is 12664369. The reversal of 12664365 is 56346621.

12664365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12664361) and next prime (12664369).

It is not a de Polignac number, because 12664365 - 2² = 12664361 is a prime.

It is a super-2 number, since 2×12664365² = 320772281706450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12664361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10230 + ... + 11400.

It is an arithmetic number, because the mean of its divisors is an integer number (731328).

Almost surely, 2^12664365 is an apocalyptic number.

12664365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12664365 is a deficient number, since it is larger than the sum of its proper divisors (10738131).

12664365 is a wasteful number, since it uses less digits than its factorization.

12664365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289.

The product of its digits is 25920, while the sum is 33.

The square root of 12664365 is about 3558.7027130683. The cubic root of 12664365 is about 233.0922350912.

The spelling of 12664365 in words is "twelve million, six hundred sixty-four thousand, three hundred sixty-five".