206646229 has 2 divisors, whose sum is σ = 206646230. Its totient is φ = 206646228.

The previous prime is 206646149. The next prime is 206646241. The reversal of 206646229 is 922646602.

206646229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127916100 + 78730129 = 11310^2 + 8873^2 .

It is a cyclic number.

It is not a de Polignac number, because 206646229 - 2¹¹ = 206644181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206646259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103323114 + 103323115.

It is an arithmetic number, because the mean of its divisors is an integer number (103323115).

Almost surely, 2^206646229 is an apocalyptic number.

It is an amenable number.

206646229 is a deficient number, since it is larger than the sum of its proper divisors (1).

206646229 is an equidigital number, since it uses as much as digits as its factorization.

206646229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 206646229 is about 14375.1949204176. The cubic root of 206646229 is about 591.2109849149.

The spelling of 206646229 in words is "two hundred six million, six hundred forty-six thousand, two hundred twenty-nine".