13908663 has 24 divisors (see below), whose sum is σ = 20756736. Its totient is φ = 8970000.

The previous prime is 13908641. The next prime is 13908667. The reversal of 13908663 is 36680931.

It is a happy number.

It is not a de Polignac number, because 13908663 - 2⁶ = 13908599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13908667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55288 + ... + 55538.

It is an arithmetic number, because the mean of its divisors is an integer number (864864).

Almost surely, 2^13908663 is an apocalyptic number.

13908663 is a deficient number, since it is larger than the sum of its proper divisors (6848073).

13908663 is a wasteful number, since it uses less digits than its factorization.

13908663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 13908663 is about 3729.4319942855. The cubic root of 13908663 is about 240.4889511019.

The spelling of 13908663 in words is "thirteen million, nine hundred eight thousand, six hundred sixty-three".