13666744 has 32 divisors (see below), whose sum is σ = 31540320. Its totient is φ = 5406336.

The previous prime is 13666729. The next prime is 13666769. The reversal of 13666744 is 44766631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8659 + ... + 10114.

It is an arithmetic number, because the mean of its divisors is an integer number (985635).

Almost surely, 2^13666744 is an apocalyptic number.

13666744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13666744 is an abundant number, since it is smaller than the sum of its proper divisors (17873576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13666744 is a wasteful number, since it uses less digits than its factorization.

13666744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18799 (or 18795 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 13666744 is about 3696.8559614894. The cubic root of 13666744 is about 239.0864809611.

The spelling of 13666744 in words is "thirteen million, six hundred sixty-six thousand, seven hundred forty-four".