13644233 has 2 divisors, whose sum is σ = 13644234. Its totient is φ = 13644232.

The previous prime is 13644229. The next prime is 13644259. The reversal of 13644233 is 33244631.

It is a happy number.

It is an a-pointer prime, because the next prime (13644259) can be obtained adding 13644233 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13520329 + 123904 = 3677^2 + 352^2 .

It is a cyclic number.

It is not a de Polignac number, because 13644233 - 2² = 13644229 is a prime.

It is not a weakly prime, because it can be changed into another prime (13644203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6822116 + 6822117.

It is an arithmetic number, because the mean of its divisors is an integer number (6822117).

Almost surely, 2^13644233 is an apocalyptic number.

It is an amenable number.

13644233 is a deficient number, since it is larger than the sum of its proper divisors (1).

13644233 is an equidigital number, since it uses as much as digits as its factorization.

13644233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 26.

The square root of 13644233 is about 3693.8100925738. The cubic root of 13644233 is about 238.9551394242.

Adding to 13644233 its reverse (33244631), we get a palindrome (46888864).

The spelling of 13644233 in words is "thirteen million, six hundred forty-four thousand, two hundred thirty-three".