6684673 has 2 divisors, whose sum is σ = 6684674. Its totient is φ = 6684672.

The previous prime is 6684659. The next prime is 6684677. The reversal of 6684673 is 3764866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4443664 + 2241009 = 2108^2 + 1497^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6684673 is a prime.

It is not a weakly prime, because it can be changed into another prime (6684677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3342336 + 3342337.

It is an arithmetic number, because the mean of its divisors is an integer number (3342337).

It is a Proth number, since it is equal to 51 ⋅ 2¹⁷ + 1 and 51 < 2¹⁷.

Almost surely, 2^6684673 is an apocalyptic number.

It is an amenable number.

6684673 is a deficient number, since it is larger than the sum of its proper divisors (1).

6684673 is an equidigital number, since it uses as much as digits as its factorization.

6684673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 40.

The square root of 6684673 is about 2585.4734576089. The cubic root of 6684673 is about 188.3764995337.

The spelling of 6684673 in words is "six million, six hundred eighty-four thousand, six hundred seventy-three".