13683217 has 4 divisors (see below), whose sum is σ = 14016996. Its totient is φ = 13349440.

The previous prime is 13683199. The next prime is 13683247. The reversal of 13683217 is 71238631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71238631 = 71 ⋅1003361.

It can be written as a sum of positive squares in 2 ways, for example, as 440896 + 13242321 = 664^2 + 3639^2 .

It is a cyclic number.

It is not a de Polignac number, because 13683217 - 2¹⁵ = 13650449 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13683247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166828 + ... + 166909.

It is an arithmetic number, because the mean of its divisors is an integer number (3504249).

Almost surely, 2^13683217 is an apocalyptic number.

It is an amenable number.

13683217 is a deficient number, since it is larger than the sum of its proper divisors (333779).

13683217 is an equidigital number, since it uses as much as digits as its factorization.

13683217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333778.

The product of its digits is 6048, while the sum is 31.

The square root of 13683217 is about 3699.0832648104. The cubic root of 13683217 is about 239.1825021316.

The spelling of 13683217 in words is "thirteen million, six hundred eighty-three thousand, two hundred seventeen".