206306 has 8 divisors (see below), whose sum is σ = 320220. Its totient is φ = 99568.

The previous prime is 206303. The next prime is 206341. The reversal of 206306 is 603602.

206306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 198025 + 8281 = 445^2 + 91^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (206303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1721 + ... + 1836.

2²⁰⁶³⁰⁶ is an apocalyptic number.

206306 is a deficient number, since it is larger than the sum of its proper divisors (113914).

206306 is a wasteful number, since it uses less digits than its factorization.

206306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 206306 is about 454.2092029010. The cubic root of 206306 is about 59.0886343754.

Adding to 206306 its reverse (603602), we get a palindrome (809908).

It can be divided in two parts, 206 and 306, that multiplied together give a palindrome (63036).

The spelling of 206306 in words is "two hundred six thousand, three hundred six".