13391613 has 12 divisors (see below), whose sum is σ = 19486428. Its totient is φ = 8861760.

The previous prime is 13391551. The next prime is 13391621. The reversal of 13391613 is 31619331.

13391613 is a `hidden beast` number, since 13 + 39 + 1 + 613 = 666.

13391613 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6563844 + 6827769 = 2562^2 + 2613^2 .

It is not a de Polignac number, because 13391613 - 2⁶ = 13391549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13391683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4198 + ... + 6663.

It is an arithmetic number, because the mean of its divisors is an integer number (1623869).

Almost surely, 2^13391613 is an apocalyptic number.

It is an amenable number.

13391613 is a deficient number, since it is larger than the sum of its proper divisors (6094815).

13391613 is a wasteful number, since it uses less digits than its factorization.

13391613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11004 (or 11001 counting only the distinct ones).

The product of its digits is 1458, while the sum is 27.

The square root of 13391613 is about 3659.4552873344. The cubic root of 13391613 is about 237.4712090677.

The spelling of 13391613 in words is "thirteen million, three hundred ninety-one thousand, six hundred thirteen".