12644413 has 8 divisors (see below), whose sum is σ = 13487040. Its totient is φ = 11812800.

The previous prime is 12644393. The next prime is 12644459. The reversal of 12644413 is 31444621.

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

It is a cyclic number.

It is not a de Polignac number, because 12644413 - 2⁹ = 12643901 is a prime.

It is a super-2 number, since 2×12644413² = 319762360229138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644473) 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 7 ways as a sum of consecutive naturals, for example, 313 + ... + 5038.

It is an arithmetic number, because the mean of its divisors is an integer number (1685880).

Almost surely, 2^12644413 is an apocalyptic number.

It is an amenable number.

12644413 is a deficient number, since it is larger than the sum of its proper divisors (842627).

12644413 is a wasteful number, since it uses less digits than its factorization.

12644413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5507.

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

The square root of 12644413 is about 3555.8983393792. The cubic root of 12644413 is about 232.9697628184.

The spelling of 12644413 in words is "twelve million, six hundred forty-four thousand, four hundred thirteen".