13309617 has 16 divisors (see below), whose sum is σ = 18800640. Its totient is φ = 8357712.

The previous prime is 13309613. The next prime is 13309619. The reversal of 13309617 is 71690331.

13309617 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13309617 - 2² = 13309613 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13309613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3184 + ... + 6062.

It is an arithmetic number, because the mean of its divisors is an integer number (1175040).

Almost surely, 2^13309617 is an apocalyptic number.

It is an amenable number.

13309617 is a deficient number, since it is larger than the sum of its proper divisors (5491023).

13309617 is a wasteful number, since it uses less digits than its factorization.

13309617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 13309617 is about 3648.2347786292. The cubic root of 13309617 is about 236.9855427454.

Adding to 13309617 its reverse (71690331), we get a palindrome (84999948).

The spelling of 13309617 in words is "thirteen million, three hundred nine thousand, six hundred seventeen".