5664209 has 2 divisors, whose sum is σ = 5664210. Its totient is φ = 5664208.

The previous prime is 5664203. The next prime is 5664257. The reversal of 5664209 is 9024665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3900625 + 1763584 = 1975^2 + 1328^2 .

It is a cyclic number.

It is not a de Polignac number, because 5664209 - 2⁸ = 5663953 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5664203) 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, 2832104 + 2832105.

It is an arithmetic number, because the mean of its divisors is an integer number (2832105).

Almost surely, 2^5664209 is an apocalyptic number.

It is an amenable number.

5664209 is a deficient number, since it is larger than the sum of its proper divisors (1).

5664209 is an equidigital number, since it uses as much as digits as its factorization.

5664209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 5664209 is about 2379.9598736113. The cubic root of 5664209 is about 178.2569302279.

The spelling of 5664209 in words is "five million, six hundred sixty-four thousand, two hundred nine".