13126613 has 4 divisors (see below), whose sum is σ = 13210380. Its totient is φ = 13042848.

The previous prime is 13126591. The next prime is 13126627. The reversal of 13126613 is 31662131.

It is a happy number.

13126613 is digitally balanced in base 2, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 3775249 + 9351364 = 1943^2 + 3058^2 .

It is a cyclic number.

It is not a de Polignac number, because 13126613 - 2¹⁶ = 13061077 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13126643) 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, 41648 + ... + 41961.

It is an arithmetic number, because the mean of its divisors is an integer number (3302595).

Almost surely, 2^13126613 is an apocalyptic number.

It is an amenable number.

13126613 is a deficient number, since it is larger than the sum of its proper divisors (83767).

13126613 is an equidigital number, since it uses as much as digits as its factorization.

13126613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83766.

The product of its digits is 648, while the sum is 23.

The square root of 13126613 is about 3623.0667948576. The cubic root of 13126613 is about 235.8943616554.

Adding to 13126613 its reverse (31662131), we get a palindrome (44788744).

The spelling of 13126613 in words is "thirteen million, one hundred twenty-six thousand, six hundred thirteen".