13718666 has 16 divisors (see below), whose sum is σ = 22444800. Its totient is φ = 6250608.

The previous prime is 13718659. The next prime is 13718669. The reversal of 13718666 is 66681731.

It is not an unprimeable number, because it can be changed into a prime (13718669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1286 + ... + 5393.

It is an arithmetic number, because the mean of its divisors is an integer number (1402800).

Almost surely, 2^13718666 is an apocalyptic number.

13718666 is a deficient number, since it is larger than the sum of its proper divisors (8726134).

13718666 is a wasteful number, since it uses less digits than its factorization.

13718666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6773.

The product of its digits is 36288, while the sum is 38.

The square root of 13718666 is about 3703.8717580391. The cubic root of 13718666 is about 239.3888734128.

The spelling of 13718666 in words is "thirteen million, seven hundred eighteen thousand, six hundred sixty-six".