6681133 has 2 divisors, whose sum is σ = 6681134. Its totient is φ = 6681132.

The previous prime is 6681071. The next prime is 6681137. The reversal of 6681133 is 3311866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6538249 + 142884 = 2557^2 + 378^2 .

It is a cyclic number.

It is not a de Polignac number, because 6681133 - 2⁹ = 6680621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6681137) 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 as a sum of consecutive naturals, namely, 3340566 + 3340567.

It is an arithmetic number, because the mean of its divisors is an integer number (3340567).

Almost surely, 2^6681133 is an apocalyptic number.

It is an amenable number.

6681133 is a deficient number, since it is larger than the sum of its proper divisors (1).

6681133 is an equidigital number, since it uses as much as digits as its factorization.

6681133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 6681133 is about 2584.7887728014. The cubic root of 6681133 is about 188.3432408359.

Adding to 6681133 its reverse (3311866), we get a palindrome (9992999).

The spelling of 6681133 in words is "six million, six hundred eighty-one thousand, one hundred thirty-three".