6564213 has 8 divisors (see below), whose sum is σ = 9724800. Its totient is φ = 4376124.

The previous prime is 6564211. The next prime is 6564241. The reversal of 6564213 is 3124656.

6564213 is a `hidden beast` number, since 6 + 5 + 642 + 13 = 666.

It is not a de Polignac number, because 6564213 - 2¹ = 6564211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 243119 = 6564213 / (6 + 5 + 6 + 4 + 2 + 1 + 3).

6564213 is a lucky number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121533 + ... + 121586.

It is an arithmetic number, because the mean of its divisors is an integer number (1215600).

Almost surely, 2^6564213 is an apocalyptic number.

It is an amenable number.

6564213 is a deficient number, since it is larger than the sum of its proper divisors (3160587).

6564213 is a wasteful number, since it uses less digits than its factorization.

6564213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243128 (or 243122 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 6564213 is about 2562.0720130394. The cubic root of 6564213 is about 187.2380983438.

Adding to 6564213 its reverse (3124656), we get a palindrome (9688869).

The spelling of 6564213 in words is "six million, five hundred sixty-four thousand, two hundred thirteen".