206489 has 2 divisors, whose sum is σ = 206490. Its totient is φ = 206488.

The previous prime is 206483. The next prime is 206501. The reversal of 206489 is 984602.

206489 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., 198025 + 8464 = 445^2 + 92^2 .

It is a cyclic number.

It is not a de Polignac number, because 206489 - 2⁸ = 206233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103244 + 103245.

It is an arithmetic number, because the mean of its divisors is an integer number (103245).

2²⁰⁶⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

206489 is a deficient number, since it is larger than the sum of its proper divisors (1).

206489 is an equidigital number, since it uses as much as digits as its factorization.

206489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 206489 is about 454.4106072706. The cubic root of 206489 is about 59.1061003797.

The spelling of 206489 in words is "two hundred six thousand, four hundred eighty-nine".