13967666 has 8 divisors (see below), whose sum is σ = 21007920. Its totient is φ = 6965028.

The previous prime is 13967623. The next prime is 13967683. The reversal of 13967666 is 66676931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8456 + ... + 9971.

It is an arithmetic number, because the mean of its divisors is an integer number (2625990).

Almost surely, 2^13967666 is an apocalyptic number.

13967666 is a deficient number, since it is larger than the sum of its proper divisors (7040254).

13967666 is a wasteful number, since it uses less digits than its factorization.

13967666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18808.

The product of its digits is 244944, while the sum is 44.

The square root of 13967666 is about 3737.3340765845. The cubic root of 13967666 is about 240.8285368659.

The spelling of 13967666 in words is "thirteen million, nine hundred sixty-seven thousand, six hundred sixty-six".