13443663 has 16 divisors (see below), whose sum is σ = 18287360. Its totient is φ = 8783424.

The previous prime is 13443643. The next prime is 13443671. The reversal of 13443663 is 36634431.

13443663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13443663 - 2⁵ = 13443631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13443663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13443623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42795 + ... + 43107.

It is an arithmetic number, because the mean of its divisors is an integer number (1142960).

Almost surely, 2^13443663 is an apocalyptic number.

13443663 is a deficient number, since it is larger than the sum of its proper divisors (4843697).

13443663 is a wasteful number, since it uses less digits than its factorization.

13443663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558.

The product of its digits is 15552, while the sum is 30.

The square root of 13443663 is about 3666.5601045121. The cubic root of 13443663 is about 237.7784759363.

The spelling of 13443663 in words is "thirteen million, four hundred forty-three thousand, six hundred sixty-three".