13663445 has 8 divisors (see below), whose sum is σ = 16604160. Its totient is φ = 10792080.

The previous prime is 13663423. The next prime is 13663457. The reversal of 13663445 is 54436631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13663445 - 2²⁰ = 12614869 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16901 + ... + 17690.

It is an arithmetic number, because the mean of its divisors is an integer number (2075520).

Almost surely, 2^13663445 is an apocalyptic number.

It is an amenable number.

13663445 is a deficient number, since it is larger than the sum of its proper divisors (2940715).

13663445 is an equidigital number, since it uses as much as digits as its factorization.

13663445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34675.

The product of its digits is 25920, while the sum is 32.

The square root of 13663445 is about 3696.4097446035. The cubic root of 13663445 is about 239.0672418072.

The spelling of 13663445 in words is "thirteen million, six hundred sixty-three thousand, four hundred forty-five".