12644116 has 12 divisors (see below), whose sum is σ = 22890420. Its totient is φ = 6104000.

The previous prime is 12644077. The next prime is 12644119. The reversal of 12644116 is 61144621.

12644116 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 2 ways, for example, as 5904900 + 6739216 = 2430^2 + 2596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644119) 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, 54385 + ... + 54616.

It is an arithmetic number, because the mean of its divisors is an integer number (1907535).

Almost surely, 2^12644116 is an apocalyptic number.

It is an amenable number.

12644116 is a deficient number, since it is larger than the sum of its proper divisors (10246304).

12644116 is a wasteful number, since it uses less digits than its factorization.

12644116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109034 (or 109032 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 12644116 is about 3555.8565775352. The cubic root of 12644116 is about 232.9679387569.

Adding to 12644116 its reverse (61144621), we get a palindrome (73788737).

The spelling of 12644116 in words is "twelve million, six hundred forty-four thousand, one hundred sixteen".