6805663 has 2 divisors, whose sum is σ = 6805664. Its totient is φ = 6805662.

The previous prime is 6805649. The next prime is 6805679. The reversal of 6805663 is 3665086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6805663 - 2²¹ = 4708511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6805693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3402831 + 3402832.

It is an arithmetic number, because the mean of its divisors is an integer number (3402832).

Almost surely, 2^6805663 is an apocalyptic number.

6805663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6805663 is an equidigital number, since it uses as much as digits as its factorization.

6805663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 6805663 is about 2608.7665667898. The cubic root of 6805663 is about 189.5062248056.

The spelling of 6805663 in words is "six million, eight hundred five thousand, six hundred sixty-three".