13256613 has 12 divisors (see below), whose sum is σ = 19231680. Its totient is φ = 8799336.

The previous prime is 13256597. The next prime is 13256647. The reversal of 13256613 is 31665231.

13256613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13256613 - 2⁴ = 13256597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13258613) 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, 931 + ... + 5232.

It is an arithmetic number, because the mean of its divisors is an integer number (1602640).

Almost surely, 2^13256613 is an apocalyptic number.

It is an amenable number.

13256613 is a deficient number, since it is larger than the sum of its proper divisors (5975067).

13256613 is a wasteful number, since it uses less digits than its factorization.

13256613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6408 (or 6405 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 13256613 is about 3640.9631967379. The cubic root of 13256613 is about 236.6705351040.

The spelling of 13256613 in words is "thirteen million, two hundred fifty-six thousand, six hundred thirteen".