11644023 has 4 divisors (see below), whose sum is σ = 15525368. Its totient is φ = 7762680.

The previous prime is 11644021. The next prime is 11644033. The reversal of 11644023 is 32044611.

11644023 is nontrivially palindromic in base 11.

11644023 is digitally balanced in base 3, 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 11644023 - 2¹ = 11644021 is a prime.

It is a Duffinian number.

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11644021) 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, 1940668 + ... + 1940673.

It is an arithmetic number, because the mean of its divisors is an integer number (3881342).

Almost surely, 2^11644023 is an apocalyptic number.

11644023 is a deficient number, since it is larger than the sum of its proper divisors (3881345).

11644023 is an equidigital number, since it uses as much as digits as its factorization.

11644023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881344.

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

The square root of 11644023 is about 3412.3339520041. Note that the first 3 decimals coincide. The cubic root of 11644023 is about 226.6562425521.

Adding to 11644023 its reverse (32044611), we get a palindrome (43688634).

The spelling of 11644023 in words is "eleven million, six hundred forty-four thousand, twenty-three".