13644455 has 16 divisors (see below), whose sum is σ = 18913824. Its totient is φ = 9338880.

The previous prime is 13644443. The next prime is 13644457. The reversal of 13644455 is 55444631.

It is not a de Polignac number, because 13644455 - 2⁴ = 13644439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13644457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6362 + ... + 8231.

It is an arithmetic number, because the mean of its divisors is an integer number (1182114).

Almost surely, 2^13644455 is an apocalyptic number.

13644455 is a deficient number, since it is larger than the sum of its proper divisors (5269369).

13644455 is a wasteful number, since it uses less digits than its factorization.

13644455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14626.

The product of its digits is 28800, while the sum is 32.

The square root of 13644455 is about 3693.8401427241. The cubic root of 13644455 is about 238.9564353992.

The spelling of 13644455 in words is "thirteen million, six hundred forty-four thousand, four hundred fifty-five".