13208617 has 4 divisors (see below), whose sum is σ = 13336960. Its totient is φ = 13080276.

The previous prime is 13208597. The next prime is 13208621. The reversal of 13208617 is 71680231.

13208617 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71680231 = 7 ⋅10240033.

It is a cyclic number.

It is not a de Polignac number, because 13208617 - 2²³ = 4820009 is a prime.

It is a super-3 number, since 3×13208617³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13208917) 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, 64017 + ... + 64222.

It is an arithmetic number, because the mean of its divisors is an integer number (3334240).

Almost surely, 2^13208617 is an apocalyptic number.

It is an amenable number.

13208617 is a deficient number, since it is larger than the sum of its proper divisors (128343).

13208617 is a wasteful number, since it uses less digits than its factorization.

13208617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128342.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 13208617 is about 3634.3661070399. The cubic root of 13208617 is about 236.3845652393.

Adding to 13208617 its reverse (71680231), we get a palindrome (84888848).

The spelling of 13208617 in words is "thirteen million, two hundred eight thousand, six hundred seventeen".