6684911 has 2 divisors, whose sum is σ = 6684912. Its totient is φ = 6684910.

The previous prime is 6684907. The next prime is 6684913. The reversal of 6684911 is 1194866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6684911 - 2² = 6684907 is a prime.

It is a Sophie Germain prime.

Together with 6684913, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6684913) 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, 3342455 + 3342456.

It is an arithmetic number, because the mean of its divisors is an integer number (3342456).

Almost surely, 2^6684911 is an apocalyptic number.

6684911 is a deficient number, since it is larger than the sum of its proper divisors (1).

6684911 is an equidigital number, since it uses as much as digits as its factorization.

6684911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 6684911 is about 2585.5194835855. The cubic root of 6684911 is about 188.3787351492.

The spelling of 6684911 in words is "six million, six hundred eighty-four thousand, nine hundred eleven".