13366817 has 2 divisors, whose sum is σ = 13366818. Its totient is φ = 13366816.

The previous prime is 13366799. The next prime is 13366819. The reversal of 13366817 is 71866331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12103441 + 1263376 = 3479^2 + 1124^2 .

It is an emirp because it is prime and its reverse (71866331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13366817 - 2¹⁴ = 13350433 is a prime.

It is a super-2 number, since 2×13366817² = 357343593422978, which contains 22 as substring.

Together with 13366819, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13366819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6683408 + 6683409.

It is an arithmetic number, because the mean of its divisors is an integer number (6683409).

Almost surely, 2^13366817 is an apocalyptic number.

It is an amenable number.

13366817 is a deficient number, since it is larger than the sum of its proper divisors (1).

13366817 is an equidigital number, since it uses as much as digits as its factorization.

13366817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 13366817 is about 3656.0657816839. The cubic root of 13366817 is about 237.3245507541.

The spelling of 13366817 in words is "thirteen million, three hundred sixty-six thousand, eight hundred seventeen".