12644033 has 4 divisors (see below), whose sum is σ = 12673668. Its totient is φ = 12614400.

The previous prime is 12644017. The next prime is 12644041. The reversal of 12644033 is 33044621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2582449 + 10061584 = 1607^2 + 3172^2 .

It is a cyclic number.

It is not a de Polignac number, because 12644033 - 2⁴ = 12644017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12646033) 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, 14168 + ... + 15033.

It is an arithmetic number, because the mean of its divisors is an integer number (3168417).

Almost surely, 2^12644033 is an apocalyptic number.

It is an amenable number.

12644033 is a deficient number, since it is larger than the sum of its proper divisors (29635).

12644033 is an equidigital number, since it uses as much as digits as its factorization.

12644033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29634.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 12644033 is about 3555.8449066291. The cubic root of 12644033 is about 232.9674289972.

Adding to 12644033 its reverse (33044621), we get a palindrome (45688654).

The spelling of 12644033 in words is "twelve million, six hundred forty-four thousand, thirty-three".