6081809 has 2 divisors, whose sum is σ = 6081810. Its totient is φ = 6081808.

The previous prime is 6081799. The next prime is 6081811. The reversal of 6081809 is 9081806.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4752400 + 1329409 = 2180^2 + 1153^2 .

It is a cyclic number.

It is not a de Polignac number, because 6081809 - 2¹² = 6077713 is a prime.

Together with 6081811, it forms a pair of twin primes.

It is a Chen prime.

6081809 is a strobogrammatic number because it is the same when read upside-down.

It is not a weakly prime, because it can be changed into another prime (6081409) 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, 3040904 + 3040905.

It is an arithmetic number, because the mean of its divisors is an integer number (3040905).

Almost surely, 2^6081809 is an apocalyptic number.

It is an amenable number.

6081809 is a deficient number, since it is larger than the sum of its proper divisors (1).

6081809 is an equidigital number, since it uses as much as digits as its factorization.

6081809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 6081809 is about 2466.1323970947. The cubic root of 6081809 is about 182.5342051356.

The spelling of 6081809 in words is "six million, eighty-one thousand, eight hundred nine".