206346 has 32 divisors (see below), whose sum is σ = 501120. Its totient is φ = 55488.

The previous prime is 206341. The next prime is 206347. The reversal of 206346 is 643602.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (206341) by changing a digit.

206346 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 15 ways as a sum of consecutive naturals, for example, 12130 + ... + 12146.

It is an arithmetic number, because the mean of its divisors is an integer number (15660).

2²⁰⁶³⁴⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250560).

206346 is an abundant number, since it is smaller than the sum of its proper divisors (294774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206346 is an equidigital number, since it uses as much as digits as its factorization.

206346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 206346 is about 454.2532333402. The cubic root of 206346 is about 59.0924529631.

Adding to 206346 its reverse (643602), we get a palindrome (849948).

The spelling of 206346 in words is "two hundred six thousand, three hundred forty-six".