6504213 has 16 divisors (see below), whose sum is σ = 9305280. Its totient is φ = 4028544.

The previous prime is 6504191. The next prime is 6504233. The reversal of 6504213 is 3124056.

It is a happy number.

It is not a de Polignac number, because 6504213 - 2⁵ = 6504181 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6504213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6504233) 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 15 ways as a sum of consecutive naturals, for example, 1945 + ... + 4097.

It is an arithmetic number, because the mean of its divisors is an integer number (581580).

Almost surely, 2^6504213 is an apocalyptic number.

It is an amenable number.

6504213 is a deficient number, since it is larger than the sum of its proper divisors (2801067).

6504213 is a wasteful number, since it uses less digits than its factorization.

6504213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 6504213 is about 2550.3358602349. The cubic root of 6504213 is about 186.6658698237.

Adding to 6504213 its reverse (3124056), we get a palindrome (9628269).

The spelling of 6504213 in words is "six million, five hundred four thousand, two hundred thirteen".