12644474 has 8 divisors (see below), whose sum is σ = 19134900. Its totient is φ = 6266176.

The previous prime is 12644473. The next prime is 12644477. The reversal of 12644474 is 47444621.

It can be written as a sum of positive squares in 2 ways, for example, as 10195249 + 2449225 = 3193^2 + 1565^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12644474.

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 3 ways as a sum of consecutive naturals, for example, 27749 + ... + 28200.

Almost surely, 2^12644474 is an apocalyptic number.

12644474 is a deficient number, since it is larger than the sum of its proper divisors (6490426).

12644474 is a wasteful number, since it uses less digits than its factorization.

12644474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56064.

The product of its digits is 21504, while the sum is 32.

The square root of 12644474 is about 3555.9069166670. The cubic root of 12644474 is about 232.9701374537.

The spelling of 12644474 in words is "twelve million, six hundred forty-four thousand, four hundred seventy-four".