13644069 has 4 divisors (see below), whose sum is σ = 18192096. Its totient is φ = 9096044.

The previous prime is 13644041. The next prime is 13644073. The reversal of 13644069 is 96044631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96044631 = 3 ⋅32014877.

It is a cyclic number.

It is not a de Polignac number, because 13644069 - 2⁷ = 13643941 is a prime.

It is a super-2 number, since 2×13644069² = 372321237753522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13644019) 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, 2274009 + ... + 2274014.

It is an arithmetic number, because the mean of its divisors is an integer number (4548024).

Almost surely, 2^13644069 is an apocalyptic number.

It is an amenable number.

13644069 is a deficient number, since it is larger than the sum of its proper divisors (4548027).

13644069 is an equidigital number, since it uses as much as digits as its factorization.

13644069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4548026.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 13644069 is about 3693.7878932066. The cubic root of 13644069 is about 238.9541820283.

The spelling of 13644069 in words is "thirteen million, six hundred forty-four thousand, sixty-nine".