13663923 has 16 divisors (see below), whose sum is σ = 22423296. Its totient is φ = 7207200.

The previous prime is 13663883. The next prime is 13663931. The reversal of 13663923 is 32936631.

13663923 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13663923 - 2⁸ = 13663667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13663933) 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, 24753 + ... + 25298.

It is an arithmetic number, because the mean of its divisors is an integer number (1401456).

Almost surely, 2^13663923 is an apocalyptic number.

13663923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13663923 is a deficient number, since it is larger than the sum of its proper divisors (8759373).

13663923 is a wasteful number, since it uses less digits than its factorization.

13663923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50074.

The product of its digits is 17496, while the sum is 33.

The square root of 13663923 is about 3696.4744013722. The cubic root of 13663923 is about 239.0700296061.

The spelling of 13663923 in words is "thirteen million, six hundred sixty-three thousand, nine hundred twenty-three".