206680189 has 2 divisors, whose sum is σ = 206680190. Its totient is φ = 206680188.

The previous prime is 206680183. The next prime is 206680207. The reversal of 206680189 is 981086602.

206680189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203547289 + 3132900 = 14267^2 + 1770^2 .

It is a cyclic number.

It is not a de Polignac number, because 206680189 - 2⁹ = 206679677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206680183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103340094 + 103340095.

It is an arithmetic number, because the mean of its divisors is an integer number (103340095).

Almost surely, 2^206680189 is an apocalyptic number.

It is an amenable number.

206680189 is a deficient number, since it is larger than the sum of its proper divisors (1).

206680189 is an equidigital number, since it uses as much as digits as its factorization.

206680189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 206680189 is about 14376.3760732669. The cubic root of 206680189 is about 591.2433694486.

The spelling of 206680189 in words is "two hundred six million, six hundred eighty thousand, one hundred eighty-nine".