2606066209 has 2 divisors, whose sum is σ = 2606066210. Its totient is φ = 2606066208.

The previous prime is 2606066171. The next prime is 2606066263. The reversal of 2606066209 is 9026606062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2110024225 + 496041984 = 45935^2 + 22272^2 .

It is a cyclic number.

It is not a de Polignac number, because 2606066209 - 2¹⁹ = 2605541921 is a prime.

It is not a weakly prime, because it can be changed into another prime (2606067209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1303033104 + 1303033105.

It is an arithmetic number, because the mean of its divisors is an integer number (1303033105).

Almost surely, 2^2606066209 is an apocalyptic number.

It is an amenable number.

2606066209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2606066209 is an equidigital number, since it uses as much as digits as its factorization.

2606066209 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 37.

The square root of 2606066209 is about 51049.6445531210. The cubic root of 2606066209 is about 1376.1374537695.

It can be divided in two parts, 260606 and 6209, that added together give a triangular number (266815 = T₇₃₀).

The spelling of 2606066209 in words is "two billion, six hundred six million, sixty-six thousand, two hundred nine".