13217613 has 4 divisors (see below), whose sum is σ = 17623488. Its totient is φ = 8811740.

The previous prime is 13217579. The next prime is 13217629. The reversal of 13217613 is 31671231.

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.

It is a cyclic number.

It is not a de Polignac number, because 13217613 - 2⁹ = 13217101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13217683) 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, 2202933 + ... + 2202938.

It is an arithmetic number, because the mean of its divisors is an integer number (4405872).

Almost surely, 2^13217613 is an apocalyptic number.

It is an amenable number.

13217613 is a deficient number, since it is larger than the sum of its proper divisors (4405875).

13217613 is an equidigital number, since it uses as much as digits as its factorization.

13217613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4405874.

The product of its digits is 756, while the sum is 24.

The square root of 13217613 is about 3635.6035262388. The cubic root of 13217613 is about 236.4382179158.

Adding to 13217613 its reverse (31671231), we get a palindrome (44888844).

The spelling of 13217613 in words is "thirteen million, two hundred seventeen thousand, six hundred thirteen".