11644223 has 2 divisors, whose sum is σ = 11644224. Its totient is φ = 11644222.

The previous prime is 11644211. The next prime is 11644261. The reversal of 11644223 is 32244611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11644223 - 2¹² = 11640127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11644723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5822111 + 5822112.

It is an arithmetic number, because the mean of its divisors is an integer number (5822112).

Almost surely, 2^11644223 is an apocalyptic number.

11644223 is a deficient number, since it is larger than the sum of its proper divisors (1).

11644223 is an equidigital number, since it uses as much as digits as its factorization.

11644223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 11644223 is about 3412.3632573335. The cubic root of 11644223 is about 226.6575402419.

Adding to 11644223 its reverse (32244611), we get a palindrome (43888834).

The spelling of 11644223 in words is "eleven million, six hundred forty-four thousand, two hundred twenty-three".