6606959209 has 2 divisors, whose sum is σ = 6606959210. Its totient is φ = 6606959208.

The previous prime is 6606959141. The next prime is 6606959221. The reversal of 6606959209 is 9029596066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6547237225 + 59721984 = 80915^2 + 7728^2 .

It is a cyclic number.

It is not a de Polignac number, because 6606959209 - 2⁷ = 6606959081 is a prime.

It is not a weakly prime, because it can be changed into another prime (6606959269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3303479604 + 3303479605.

It is an arithmetic number, because the mean of its divisors is an integer number (3303479605).

Almost surely, 2^6606959209 is an apocalyptic number.

It is an amenable number.

6606959209 is a deficient number, since it is larger than the sum of its proper divisors (1).

6606959209 is an equidigital number, since it uses as much as digits as its factorization.

6606959209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1574640, while the sum is 52.

The square root of 6606959209 is about 81283.2037323825. The cubic root of 6606959209 is about 1876.4365130388.

The spelling of 6606959209 in words is "six billion, six hundred six million, nine hundred fifty-nine thousand, two hundred nine".