6684906407 has 2 divisors, whose sum is σ = 6684906408. Its totient is φ = 6684906406.

The previous prime is 6684906391. The next prime is 6684906443. The reversal of 6684906407 is 7046094866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6684906407 - 2⁴ = 6684906391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6684906497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3342453203 + 3342453204.

It is an arithmetic number, because the mean of its divisors is an integer number (3342453204).

Almost surely, 2^6684906407 is an apocalyptic number.

6684906407 is a deficient number, since it is larger than the sum of its proper divisors (1).

6684906407 is an equidigital number, since it uses as much as digits as its factorization.

6684906407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The square root of 6684906407 is about 81761.2769408600. The cubic root of 6684906407 is about 1883.7869200606.

The spelling of 6684906407 in words is "six billion, six hundred eighty-four million, nine hundred six thousand, four hundred seven".