6685807 has 2 divisors, whose sum is σ = 6685808. Its totient is φ = 6685806.

The previous prime is 6685799. The next prime is 6685813. The reversal of 6685807 is 7085866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6685807 - 2³ = 6685799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6685807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6685837) 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, 3342903 + 3342904.

It is an arithmetic number, because the mean of its divisors is an integer number (3342904).

Almost surely, 2^6685807 is an apocalyptic number.

6685807 is a deficient number, since it is larger than the sum of its proper divisors (1).

6685807 is an equidigital number, since it uses as much as digits as its factorization.

6685807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 6685807 is about 2585.6927505023. The cubic root of 6685807 is about 188.3871511080.

The spelling of 6685807 in words is "six million, six hundred eighty-five thousand, eight hundred seven".