12656233 has 16 divisors (see below), whose sum is σ = 13787136. Its totient is φ = 11586960.

The previous prime is 12656227. The next prime is 12656239. The reversal of 12656233 is 33265621.

It is an interprime number because it is at equal distance from previous prime (12656227) and next prime (12656239).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12656233 is a prime.

It is a Duffinian number.

Its product of digits (6480) is a multiple of the sum of its prime divisors (324).

It is not an unprimeable number, because it can be changed into a prime (12656239) 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 15 ways as a sum of consecutive naturals, for example, 66168 + ... + 66358.

It is an arithmetic number, because the mean of its divisors is an integer number (861696).

Almost surely, 2^12656233 is an apocalyptic number.

It is an amenable number.

12656233 is a deficient number, since it is larger than the sum of its proper divisors (1130903).

12656233 is a wasteful number, since it uses less digits than its factorization.

12656233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324.

The product of its digits is 6480, while the sum is 28.

The square root of 12656233 is about 3557.5599784122. The cubic root of 12656233 is about 233.0423336049.

The spelling of 12656233 in words is "twelve million, six hundred fifty-six thousand, two hundred thirty-three".