12644103 has 4 divisors (see below), whose sum is σ = 16858808. Its totient is φ = 8429400.

The previous prime is 12644077. The next prime is 12644119. The reversal of 12644103 is 30144621.

12644103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12644103 - 2²⁰ = 11595527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12644103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644183) 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, 2107348 + ... + 2107353.

It is an arithmetic number, because the mean of its divisors is an integer number (4214702).

Almost surely, 2^12644103 is an apocalyptic number.

12644103 is a deficient number, since it is larger than the sum of its proper divisors (4214705).

12644103 is an equidigital number, since it uses as much as digits as its factorization.

12644103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4214704.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 12644103 is about 3555.8547495644. The cubic root of 12644103 is about 232.9678589151.

Adding to 12644103 its reverse (30144621), we get a palindrome (42788724).

The spelling of 12644103 in words is "twelve million, six hundred forty-four thousand, one hundred three".