6642211 has 2 divisors, whose sum is σ = 6642212. Its totient is φ = 6642210.

The previous prime is 6642187. The next prime is 6642281. The reversal of 6642211 is 1122466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6642211 - 2⁹ = 6641699 is a prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (6642281) 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 as a sum of consecutive naturals, namely, 3321105 + 3321106.

It is an arithmetic number, because the mean of its divisors is an integer number (3321106).

Almost surely, 2^6642211 is an apocalyptic number.

6642211 is a deficient number, since it is larger than the sum of its proper divisors (1).

6642211 is an equidigital number, since it uses as much as digits as its factorization.

6642211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 22.

The square root of 6642211 is about 2577.2487268403. The cubic root of 6642211 is about 187.9767871596.

Adding to 6642211 its reverse (1122466), we get a palindrome (7764677).

The spelling of 6642211 in words is "six million, six hundred forty-two thousand, two hundred eleven".