13968558 has 16 divisors (see below), whose sum is σ = 31041360. Its totient is φ = 4656168.

The previous prime is 13968547. The next prime is 13968571. The reversal of 13968558 is 85586931.

13968558 is a `hidden beast` number, since 1 + 3 + 96 + 8 + 558 = 666.

13968558 is nontrivially palindromic in base 8.

13968558 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13968558² = 390241225198728, which contains 22 as substring.

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, 129285 + ... + 129392.

It is an arithmetic number, because the mean of its divisors is an integer number (1940085).

Almost surely, 2^13968558 is an apocalyptic number.

13968558 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13968558 is an abundant number, since it is smaller than the sum of its proper divisors (17072802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13968558 is a wasteful number, since it uses less digits than its factorization.

13968558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258688 (or 258682 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 13968558 is about 3737.4534110809. The cubic root of 13968558 is about 240.8336633364.

The spelling of 13968558 in words is "thirteen million, nine hundred sixty-eight thousand, five hundred fifty-eight".