13968566 has 4 divisors (see below), whose sum is σ = 20952852. Its totient is φ = 6984282.

The previous prime is 13968547. The next prime is 13968571. The reversal of 13968566 is 66586931.

13968566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3492140 + ... + 3492143.

It is an arithmetic number, because the mean of its divisors is an integer number (5238213).

Almost surely, 2^13968566 is an apocalyptic number.

13968566 is a deficient number, since it is larger than the sum of its proper divisors (6984286).

13968566 is an equidigital number, since it uses as much as digits as its factorization.

13968566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6984285.

The product of its digits is 233280, while the sum is 44.

The square root of 13968566 is about 3737.4544813282. The cubic root of 13968566 is about 240.8337093127.

The spelling of 13968566 in words is "thirteen million, nine hundred sixty-eight thousand, five hundred sixty-six".