12644671 has 8 divisors (see below), whose sum is σ = 14334320. Its totient is φ = 11057472.

The previous prime is 12644669. The next prime is 12644701. The reversal of 12644671 is 17644621.

12644671 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 12644671 - 2¹ = 12644669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644371) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 25350 + ... + 25843.

It is an arithmetic number, because the mean of its divisors is an integer number (1791790).

Almost surely, 2^12644671 is an apocalyptic number.

12644671 is a deficient number, since it is larger than the sum of its proper divisors (1689649).

12644671 is a wasteful number, since it uses less digits than its factorization.

12644671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51225.

The product of its digits is 8064, while the sum is 31.

The square root of 12644671 is about 3555.9346169467. The cubic root of 12644671 is about 232.9713473335.

The spelling of 12644671 in words is "twelve million, six hundred forty-four thousand, six hundred seventy-one".