13712666 has 8 divisors (see below), whose sum is σ = 22438944. Its totient is φ = 6233020.

The previous prime is 13712651. The next prime is 13712711. The reversal of 13712666 is 66621731.

13712666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 311630 + ... + 311673.

It is an arithmetic number, because the mean of its divisors is an integer number (2804868).

Almost surely, 2^13712666 is an apocalyptic number.

13712666 is a deficient number, since it is larger than the sum of its proper divisors (8726278).

13712666 is a wasteful number, since it uses less digits than its factorization.

13712666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623316.

The product of its digits is 9072, while the sum is 32.

The square root of 13712666 is about 3703.0617062101. The cubic root of 13712666 is about 239.3539685931.

It can be divided in two parts, 1371266 and 6, that multiplied together give a triangular number (8227596 = T₄₀₅₆).

The spelling of 13712666 in words is "thirteen million, seven hundred twelve thousand, six hundred sixty-six".