6608809 has 2 divisors, whose sum is σ = 6608810. Its totient is φ = 6608808.

The previous prime is 6608807. The next prime is 6608821. The reversal of 6608809 is 9088066.

6608809 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6579225 + 29584 = 2565^2 + 172^2 .

It is a cyclic number.

It is not a de Polignac number, because 6608809 - 2¹ = 6608807 is a prime.

Together with 6608807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6608807) 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, 3304404 + 3304405.

It is an arithmetic number, because the mean of its divisors is an integer number (3304405).

Almost surely, 2^6608809 is an apocalyptic number.

It is an amenable number.

6608809 is a deficient number, since it is larger than the sum of its proper divisors (1).

6608809 is an equidigital number, since it uses as much as digits as its factorization.

6608809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 6608809 is about 2570.7603933467. The cubic root of 6608809 is about 187.6611615855.

The spelling of 6608809 in words is "six million, six hundred eight thousand, eight hundred nine".