14686666 has 4 divisors (see below), whose sum is σ = 22030002. Its totient is φ = 7343332.

The previous prime is 14686663. The next prime is 14686687. The reversal of 14686666 is 66668641.

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

It can be written as a sum of positive squares in only one way, i.e., 13111641 + 1575025 = 3621^2 + 1255^2 .

14686666 is a modest number, since divided by 6666 gives 1468 as remainder.

It is not an unprimeable number, because it can be changed into a prime (14686663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3671665 + ... + 3671668.

Almost surely, 2^14686666 is an apocalyptic number.

14686666 is a deficient number, since it is larger than the sum of its proper divisors (7343336).

14686666 is an equidigital number, since it uses as much as digits as its factorization.

14686666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7343335.

The product of its digits is 248832, while the sum is 43.

The square root of 14686666 is about 3832.3186193217. The cubic root of 14686666 is about 244.8918917731.

The spelling of 14686666 in words is "fourteen million, six hundred eighty-six thousand, six hundred sixty-six".