13386517 has 4 divisors (see below), whose sum is σ = 13393836. Its totient is φ = 13379200.

The previous prime is 13386509. The next prime is 13386539. The reversal of 13386517 is 71568331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 71568331 = 1427 ⋅50153.

It can be written as a sum of positive squares in 2 ways, for example, as 1833316 + 11553201 = 1354^2 + 3399^2 .

It is a cyclic number.

It is not a de Polignac number, because 13386517 - 2³ = 13386509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13386547) 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, 1767 + ... + 5467.

It is an arithmetic number, because the mean of its divisors is an integer number (3348459).

Almost surely, 2^13386517 is an apocalyptic number.

It is an amenable number.

13386517 is a deficient number, since it is larger than the sum of its proper divisors (7319).

13386517 is an equidigital number, since it uses as much as digits as its factorization.

13386517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7318.

The product of its digits is 15120, while the sum is 34.

The square root of 13386517 is about 3658.7589425924. The cubic root of 13386517 is about 237.4410830772.

The spelling of 13386517 in words is "thirteen million, three hundred eighty-six thousand, five hundred seventeen".