13504613 has 4 divisors (see below), whose sum is σ = 14299020. Its totient is φ = 12710208.

The previous prime is 13504597. The next prime is 13504643. The reversal of 13504613 is 31640531.

It is a happy number.

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 4937284 + 8567329 = 2222^2 + 2927^2 .

It is a cyclic number.

It is not a de Polignac number, because 13504613 - 2⁴ = 13504597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13504643) 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, 397178 + ... + 397211.

It is an arithmetic number, because the mean of its divisors is an integer number (3574755).

Almost surely, 2^13504613 is an apocalyptic number.

It is an amenable number.

13504613 is a deficient number, since it is larger than the sum of its proper divisors (794407).

13504613 is an equidigital number, since it uses as much as digits as its factorization.

13504613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794406.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 13504613 is about 3674.8623103458. The cubic root of 13504613 is about 238.1372757476.

The spelling of 13504613 in words is "thirteen million, five hundred four thousand, six hundred thirteen".