12243664 has 10 divisors (see below), whose sum is σ = 23722130. Its totient is φ = 6121824.

The previous prime is 12243661. The next prime is 12243701. The reversal of 12243664 is 46634221.

12243664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6290064 + 5953600 = 2508^2 + 2440^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382599 + ... + 382630.

It is an arithmetic number, because the mean of its divisors is an integer number (2372213).

Almost surely, 2^12243664 is an apocalyptic number.

It is an amenable number.

12243664 is a deficient number, since it is larger than the sum of its proper divisors (11478466).

12243664 is an equidigital number, since it uses as much as digits as its factorization.

12243664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765237 (or 765231 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 12243664 is about 3499.0947400721. The cubic root of 12243664 is about 230.4820639061.

Adding to 12243664 its reverse (46634221), we get a palindrome (58877885).

It can be divided in two parts, 122436 and 64, that added together give a square (122500 = 350²).

The spelling of 12243664 in words is "twelve million, two hundred forty-three thousand, six hundred sixty-four".