6670562209 has 2 divisors, whose sum is σ = 6670562210. Its totient is φ = 6670562208.

The previous prime is 6670562207. The next prime is 6670562231. The reversal of 6670562209 is 9022650766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4057307809 + 2613254400 = 63697^2 + 51120^2 .

It is a cyclic number.

It is not a de Polignac number, because 6670562209 - 2¹ = 6670562207 is a prime.

Together with 6670562207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6670562207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3335281104 + 3335281105.

It is an arithmetic number, because the mean of its divisors is an integer number (3335281105).

Almost surely, 2^6670562209 is an apocalyptic number.

It is an amenable number.

6670562209 is a deficient number, since it is larger than the sum of its proper divisors (1).

6670562209 is an equidigital number, since it uses as much as digits as its factorization.

6670562209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 6670562209 is about 81673.5098364213. The cubic root of 6670562209 is about 1882.4385709517.

The spelling of 6670562209 in words is "six billion, six hundred seventy million, five hundred sixty-two thousand, two hundred nine".