13663573 has 16 divisors (see below), whose sum is σ = 17320320. Its totient is φ = 10468800.

The previous prime is 13663501. The next prime is 13663577. The reversal of 13663573 is 37536631.

It is a cyclic number.

It is not a de Polignac number, because 13663573 - 2⁹ = 13663061 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 (13663577) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3243 + ... + 6151.

It is an arithmetic number, because the mean of its divisors is an integer number (1082520).

Almost surely, 2^13663573 is an apocalyptic number.

It is an amenable number.

13663573 is a deficient number, since it is larger than the sum of its proper divisors (3656747).

13663573 is a wasteful number, since it uses less digits than its factorization.

13663573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2988.

The product of its digits is 34020, while the sum is 34.

The square root of 13663573 is about 3696.4270586608. The cubic root of 13663573 is about 239.0679883371.

The spelling of 13663573 in words is "thirteen million, six hundred sixty-three thousand, five hundred seventy-three".