13683321 has 12 divisors (see below), whose sum is σ = 20624448. Its totient is φ = 8725464.

The previous prime is 13683311. The next prime is 13683347. The reversal of 13683321 is 12338631.

It is a happy number.

13683321 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13683321 - 2¹⁹ = 13159033 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13683301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32845 + ... + 33258.

It is an arithmetic number, because the mean of its divisors is an integer number (1718704).

Almost surely, 2^13683321 is an apocalyptic number.

It is an amenable number.

13683321 is a deficient number, since it is larger than the sum of its proper divisors (6941127).

13683321 is a wasteful number, since it uses less digits than its factorization.

13683321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66132 (or 66129 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 13683321 is about 3699.0973223207. The cubic root of 13683321 is about 239.1831081031.

The spelling of 13683321 in words is "thirteen million, six hundred eighty-three thousand, three hundred twenty-one".