206 is the smallest number m such that 111111 + m is prime.
The squares of 206 and 208, two consecutive even numbers, use the same digits: 2062 = 42436 and 2082 = 43264.
206 = 13 + 23 + 23 + 43 + 53.
206 is 248 in base 9.
206 is the smallest number whose English name (two hundred and six) contains all five vowels exactly once.
Source: Number Gossip
206's English name is "two hundred six". Numbers only use "and" when expressing a decimal point. The first number to feature the letter A is "one thousand".
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