206197 has 2 divisors, whose sum is σ = 206198. Its totient is φ = 206196.

The previous prime is 206191. The next prime is 206203. The reversal of 206197 is 791602.

It is a balanced prime because it is at equal distance from previous prime (206191) and next prime (206203).

It can be written as a sum of positive squares in only one way, i.e., 206116 + 81 = 454^2 + 9^2 .

It is a cyclic number.

It is not a de Polignac number, because 206197 - 2⁷ = 206069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103098 + 103099.

It is an arithmetic number, because the mean of its divisors is an integer number (103099).

2²⁰⁶¹⁹⁷ is an apocalyptic number.

It is an amenable number.

206197 is a deficient number, since it is larger than the sum of its proper divisors (1).

206197 is an equidigital number, since it uses as much as digits as its factorization.

206197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 206197 is about 454.0891982860. The cubic root of 206197 is about 59.0782262183.

Adding to 206197 its reverse (791602), we get a palindrome (997799).

The spelling of 206197 in words is "two hundred six thousand, one hundred ninety-seven".