13998668 has 24 divisors (see below), whose sum is σ = 26342400. Its totient is φ = 6488208.

The previous prime is 13998659. The next prime is 13998679. The reversal of 13998668 is 86689931.

13998668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1613 + ... + 5531.

It is an arithmetic number, because the mean of its divisors is an integer number (1097600).

Almost surely, 2^13998668 is an apocalyptic number.

It is an amenable number.

13998668 is a deficient number, since it is larger than the sum of its proper divisors (12343732).

13998668 is a wasteful number, since it uses less digits than its factorization.

13998668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3989 (or 3987 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The square root of 13998668 is about 3741.4793865529. The cubic root of 13998668 is about 241.0065825811.

The spelling of 13998668 in words is "thirteen million, nine hundred ninety-eight thousand, six hundred sixty-eight".