6863309 has 2 divisors, whose sum is σ = 6863310. Its totient is φ = 6863308.

The previous prime is 6863303. The next prime is 6863317. The reversal of 6863309 is 9033686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6786025 + 77284 = 2605^2 + 278^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6863309 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6863303) 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, 3431654 + 3431655.

It is an arithmetic number, because the mean of its divisors is an integer number (3431655).

Almost surely, 2^6863309 is an apocalyptic number.

It is an amenable number.

6863309 is a deficient number, since it is larger than the sum of its proper divisors (1).

6863309 is an equidigital number, since it uses as much as digits as its factorization.

6863309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 6863309 is about 2619.7917856196. The cubic root of 6863309 is about 190.0397792980.

The spelling of 6863309 in words is "six million, eight hundred sixty-three thousand, three hundred nine".