206039017 has 2 divisors, whose sum is σ = 206039018. Its totient is φ = 206039016.

The previous prime is 206039011. The next prime is 206039039. The reversal of 206039017 is 710930602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204232681 + 1806336 = 14291^2 + 1344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206039017 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206039011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103019508 + 103019509.

It is an arithmetic number, because the mean of its divisors is an integer number (103019509).

Almost surely, 2^206039017 is an apocalyptic number.

It is an amenable number.

206039017 is a deficient number, since it is larger than the sum of its proper divisors (1).

206039017 is an equidigital number, since it uses as much as digits as its factorization.

206039017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 206039017 is about 14354.0592516542. The cubic root of 206039017 is about 590.6313427536.

Adding to 206039017 its reverse (710930602), we get a palindrome (916969619).

The spelling of 206039017 in words is "two hundred six million, thirty-nine thousand, seventeen".