12644746 has 8 divisors (see below), whose sum is σ = 18982404. Its totient is φ = 6317280.

The previous prime is 12644741. The next prime is 12644759. The reversal of 12644746 is 64744621.

It can be written as a sum of positive squares in 2 ways, for example, as 10208025 + 2436721 = 3195^2 + 1561^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12644741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2806 + ... + 5758.

Almost surely, 2^12644746 is an apocalyptic number.

12644746 is a deficient number, since it is larger than the sum of its proper divisors (6337658).

12644746 is a wasteful number, since it uses less digits than its factorization.

12644746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5096.

The product of its digits is 32256, while the sum is 34.

The square root of 12644746 is about 3555.9451626818. The cubic root of 12644746 is about 232.9718079443.

The spelling of 12644746 in words is "twelve million, six hundred forty-four thousand, seven hundred forty-six".