206897 has 2 divisors, whose sum is σ = 206898. Its totient is φ = 206896.

The previous prime is 206887. The next prime is 206909. The reversal of 206897 is 798602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163216 + 43681 = 404^2 + 209^2 .

It is a cyclic number.

It is not a de Polignac number, because 206897 - 2⁸ = 206641 is a prime.

It is not a weakly prime, because it can be changed into another prime (206807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103448 + 103449.

It is an arithmetic number, because the mean of its divisors is an integer number (103449).

2²⁰⁶⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

206897 is a deficient number, since it is larger than the sum of its proper divisors (1).

206897 is an equidigital number, since it uses as much as digits as its factorization.

206897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 206897 is about 454.8593189108. The cubic root of 206897 is about 59.1450038617.

The spelling of 206897 in words is "two hundred six thousand, eight hundred ninety-seven".