13666361 has 8 divisors (see below), whose sum is σ = 13871520. Its totient is φ = 13462848.

The previous prime is 13666321. The next prime is 13666369. The reversal of 13666361 is 16366631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13666361 - 2⁶ = 13666297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13666369) 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, 35870 + ... + 36248.

It is an arithmetic number, because the mean of its divisors is an integer number (1733940).

Almost surely, 2^13666361 is an apocalyptic number.

It is an amenable number.

13666361 is a deficient number, since it is larger than the sum of its proper divisors (205159).

13666361 is a wasteful number, since it uses less digits than its factorization.

13666361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823.

The product of its digits is 11664, while the sum is 32.

The square root of 13666361 is about 3696.8041603526. The cubic root of 13666361 is about 239.0842475353.

The spelling of 13666361 in words is "thirteen million, six hundred sixty-six thousand, three hundred sixty-one".