13643317 has 6 divisors (see below), whose sum is σ = 14098614. Its totient is φ = 13202280.

The previous prime is 13643293. The next prime is 13643323. The reversal of 13643317 is 71334631.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13608721 + 34596 = 3689^2 + 186^2 .

It is not a de Polignac number, because 13643317 - 2¹¹ = 13641269 is a prime.

It is a super-2 number, since 2×13643317² = 372280197524978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13643017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6138 + ... + 8059.

It is an arithmetic number, because the mean of its divisors is an integer number (2349769).

Almost surely, 2^13643317 is an apocalyptic number.

It is an amenable number.

13643317 is a deficient number, since it is larger than the sum of its proper divisors (455297).

13643317 is an equidigital number, since it uses as much as digits as its factorization.

13643317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14259 (or 14228 counting only the distinct ones).

The product of its digits is 4536, while the sum is 28.

The square root of 13643317 is about 3693.6860992781. The cubic root of 13643317 is about 238.9497919194.

Adding to 13643317 its reverse (71334631), we get a palindrome (84977948).

The spelling of 13643317 in words is "thirteen million, six hundred forty-three thousand, three hundred seventeen".