6608213309 has 2 divisors, whose sum is σ = 6608213310. Its totient is φ = 6608213308.

The previous prime is 6608213299. The next prime is 6608213323. The reversal of 6608213309 is 9033128066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5288925625 + 1319287684 = 72725^2 + 36322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6608213309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6608213389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3304106654 + 3304106655.

It is an arithmetic number, because the mean of its divisors is an integer number (3304106655).

Almost surely, 2^6608213309 is an apocalyptic number.

It is an amenable number.

6608213309 is a deficient number, since it is larger than the sum of its proper divisors (1).

6608213309 is an equidigital number, since it uses as much as digits as its factorization.

6608213309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 6608213309 is about 81290.9177522311. The cubic root of 6608213309 is about 1876.5552307968. Note that the first 3 decimals are identical.

The spelling of 6608213309 in words is "six billion, six hundred eight million, two hundred thirteen thousand, three hundred nine".