206061169 has 2 divisors, whose sum is σ = 206061170. Its totient is φ = 206061168.

The previous prime is 206061157. The next prime is 206061179. The reversal of 206061169 is 961160602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198443569 + 7617600 = 14087^2 + 2760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206061169 is a prime.

It is a super-2 number, since 2×206061169² = 84922410739293122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 206061169.

It is not a weakly prime, because it can be changed into another prime (206061139) 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, 103030584 + 103030585.

It is an arithmetic number, because the mean of its divisors is an integer number (103030585).

Almost surely, 2^206061169 is an apocalyptic number.

It is an amenable number.

206061169 is a deficient number, since it is larger than the sum of its proper divisors (1).

206061169 is an equidigital number, since it uses as much as digits as its factorization.

206061169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 206061169 is about 14354.8308593309. The cubic root of 206061169 is about 590.6525089657.

The spelling of 206061169 in words is "two hundred six million, sixty-one thousand, one hundred sixty-nine".