13983661 has 8 divisors (see below), whose sum is σ = 14255360. Its totient is φ = 13714272.

The previous prime is 13983647. The next prime is 13983667. The reversal of 13983661 is 16638931.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13983661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13983661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13983667) 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, 15850 + ... + 16708.

It is an arithmetic number, because the mean of its divisors is an integer number (1781920).

Almost surely, 2^13983661 is an apocalyptic number.

It is an amenable number.

13983661 is a deficient number, since it is larger than the sum of its proper divisors (271699).

13983661 is an equidigital number, since it uses as much as digits as its factorization.

13983661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155.

The product of its digits is 23328, while the sum is 37.

The square root of 13983661 is about 3739.4733586429. The cubic root of 13983661 is about 240.9204296464.

The spelling of 13983661 in words is "thirteen million, nine hundred eighty-three thousand, six hundred sixty-one".