6504013 has 4 divisors (see below), whose sum is σ = 6886620. Its totient is φ = 6121408.

The previous prime is 6504011. The next prime is 6504037. The reversal of 6504013 is 3104056.

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 3674889 + 2829124 = 1917^2 + 1682^2 .

It is a cyclic number.

It is not a de Polignac number, because 6504013 - 2¹ = 6504011 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 (6504011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191278 + ... + 191311.

It is an arithmetic number, because the mean of its divisors is an integer number (1721655).

Almost surely, 2^6504013 is an apocalyptic number.

It is an amenable number.

6504013 is a deficient number, since it is larger than the sum of its proper divisors (382607).

6504013 is a wasteful number, since it uses less digits than its factorization.

6504013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382606.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 6504013 is about 2550.2966494116. The cubic root of 6504013 is about 186.6639565224.

Adding to 6504013 its reverse (3104056), we get a palindrome (9608069).

The spelling of 6504013 in words is "six million, five hundred four thousand, thirteen".