12644315 has 4 divisors (see below), whose sum is σ = 15173184. Its totient is φ = 10115448.

The previous prime is 12644299. The next prime is 12644341. The reversal of 12644315 is 51344621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12644315 - 2⁴ = 12644299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1264427 + ... + 1264436.

It is an arithmetic number, because the mean of its divisors is an integer number (3793296).

Almost surely, 2^12644315 is an apocalyptic number.

12644315 is a deficient number, since it is larger than the sum of its proper divisors (2528869).

12644315 is an equidigital number, since it uses as much as digits as its factorization.

12644315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528868.

The product of its digits is 2880, while the sum is 26.

The square root of 12644315 is about 3555.8845594310. The cubic root of 12644315 is about 232.9691609427.

Adding to 12644315 its reverse (51344621), we get a palindrome (63988936).

The spelling of 12644315 in words is "twelve million, six hundred forty-four thousand, three hundred fifteen".