12664222 has 8 divisors (see below), whose sum is σ = 19996200. Its totient is φ = 5998824.

The previous prime is 12664217. The next prime is 12664247. The reversal of 12664222 is 22246621.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 166597 + ... + 166672.

It is an arithmetic number, because the mean of its divisors is an integer number (2499525).

Almost surely, 2^12664222 is an apocalyptic number.

12664222 is a deficient number, since it is larger than the sum of its proper divisors (7331978).

12664222 is a wasteful number, since it uses less digits than its factorization.

12664222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333290.

The product of its digits is 2304, while the sum is 25.

The square root of 12664222 is about 3558.6826214205. The cubic root of 12664222 is about 233.0913577656.

The spelling of 12664222 in words is "twelve million, six hundred sixty-four thousand, two hundred twenty-two".