206459 has 6 divisors (see below), whose sum is σ = 226884. Its totient is φ = 186320.

The previous prime is 206447. The next prime is 206461. The reversal of 206459 is 954602.

It is not a de Polignac number, because 206459 - 2⁸ = 206203 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 206459.

It is not an unprimeable number, because it can be changed into a prime (206419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1439 + ... + 1575.

It is an arithmetic number, because the mean of its divisors is an integer number (37814).

2²⁰⁶⁴⁵⁹ is an apocalyptic number.

206459 is a deficient number, since it is larger than the sum of its proper divisors (20425).

206459 is an equidigital number, since it uses as much as digits as its factorization.

206459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 206459 is about 454.3775962787. The cubic root of 206459 is about 59.1032378077.

The spelling of 206459 in words is "two hundred six thousand, four hundred fifty-nine".