206402017 has 2 divisors, whose sum is σ = 206402018. Its totient is φ = 206402016.

The previous prime is 206402011. The next prime is 206402057. The reversal of 206402017 is 710204602.

206402017 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., 139145616 + 67256401 = 11796^2 + 8201^2 .

It is a cyclic number.

It is not a de Polignac number, because 206402017 - 2⁷ = 206401889 is a prime.

It is equal to p_11413660 and since 206402017 and 11413660 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (206402011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103201008 + 103201009.

It is an arithmetic number, because the mean of its divisors is an integer number (103201009).

Almost surely, 2^206402017 is an apocalyptic number.

It is an amenable number.

206402017 is a deficient number, since it is larger than the sum of its proper divisors (1).

206402017 is an equidigital number, since it uses as much as digits as its factorization.

206402017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 206402017 is about 14366.6981940876. The cubic root of 206402017 is about 590.9779977933.

Adding to 206402017 its reverse (710204602), we get a palindrome (916606619).

The spelling of 206402017 in words is "two hundred six million, four hundred two thousand, seventeen".