6809617 has 2 divisors, whose sum is σ = 6809618. Its totient is φ = 6809616.

The previous prime is 6809611. The next prime is 6809629. The reversal of 6809617 is 7169086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5645376 + 1164241 = 2376^2 + 1079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6809617 is a prime.

It is not a weakly prime, because it can be changed into another prime (6809611) 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, 3404808 + 3404809.

It is an arithmetic number, because the mean of its divisors is an integer number (3404809).

Almost surely, 2^6809617 is an apocalyptic number.

It is an amenable number.

6809617 is a deficient number, since it is larger than the sum of its proper divisors (1).

6809617 is an equidigital number, since it uses as much as digits as its factorization.

6809617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 6809617 is about 2609.5242861487. The cubic root of 6809617 is about 189.5429179020.

The spelling of 6809617 in words is "six million, eight hundred nine thousand, six hundred seventeen".