12564223 has 8 divisors (see below), whose sum is σ = 14424192. Its totient is φ = 10720536.

The previous prime is 12564193. The next prime is 12564247. The reversal of 12564223 is 32246521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12564223 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 (12514223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2365 + ... + 5542.

It is an arithmetic number, because the mean of its divisors is an integer number (1803024).

Almost surely, 2^12564223 is an apocalyptic number.

12564223 is a deficient number, since it is larger than the sum of its proper divisors (1859969).

12564223 is an equidigital number, since it uses as much as digits as its factorization.

12564223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8141.

The product of its digits is 2880, while the sum is 25.

The square root of 12564223 is about 3544.6047734550. The cubic root of 12564223 is about 232.4762252639.

The spelling of 12564223 in words is "twelve million, five hundred sixty-four thousand, two hundred twenty-three".