13666344 has 16 divisors (see below), whose sum is σ = 34165920. Its totient is φ = 4555440.

The previous prime is 13666321. The next prime is 13666369. The reversal of 13666344 is 44366631.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284692 + ... + 284739.

It is an arithmetic number, because the mean of its divisors is an integer number (2135370).

Almost surely, 2^13666344 is an apocalyptic number.

It is an amenable number.

13666344 is an abundant number, since it is smaller than the sum of its proper divisors (20499576).

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

13666344 is a wasteful number, since it uses less digits than its factorization.

13666344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569440 (or 569436 counting only the distinct ones).

The product of its digits is 31104, while the sum is 33.

The square root of 13666344 is about 3696.8018610686. The cubic root of 13666344 is about 239.0841484005.

The spelling of 13666344 in words is "thirteen million, six hundred sixty-six thousand, three hundred forty-four".