12644833 has 4 divisors (see below), whose sum is σ = 12913920. Its totient is φ = 12375748.

The previous prime is 12644831. The next prime is 12644857. The reversal of 12644833 is 33844621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12644833 - 2¹ = 12644831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12644795 and 12644804.

It is not an unprimeable number, because it can be changed into a prime (12644831) 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, 134473 + ... + 134566.

It is an arithmetic number, because the mean of its divisors is an integer number (3228480).

Almost surely, 2^12644833 is an apocalyptic number.

It is an amenable number.

12644833 is a deficient number, since it is larger than the sum of its proper divisors (269087).

12644833 is an equidigital number, since it uses as much as digits as its factorization.

12644833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269086.

The product of its digits is 13824, while the sum is 31.

The square root of 12644833 is about 3555.9573956953. The cubic root of 12644833 is about 232.9723422506.

The spelling of 12644833 in words is "twelve million, six hundred forty-four thousand, eight hundred thirty-three".