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Natural number
186 (one hundred [and] eighty-six) is the natural number following 185 and preceding 187.
There is no integer with exactly 186 coprimes less than it, so 186 is a nontotient. It is also never the difference between an integer and the total of coprimes below it, so it is a noncototient.[1]
There are 186 different pentahexes, shapes formed by gluing together five regular hexagons, when rotations of shapes are counted as distinct from each other.[2][3]
186 is a Fine number.[4]
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