186 (number)

186 1, 2, 3, 6, 31, 62, 93, 186 186 (one hundred [and] eighty-six) is the natural number following 185 and preceding 187. In mathematics 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.A058763 Integers which are neither totient nor cototient There are 186 different pentahexes, shapes formed by gluing together five regular hexagons, when rotations of shapes are counted as distinct from each other.A001207 Number of fixed hexagonal polyominoes with n cells Lunnon W. F. Read Ronald C. Counting hexagonal and triangular polyominoes 10.1016/B978-1-4832-3187-7.50013-1 0337670 87–100 Academic Press Graph Theory and Computing 1972 978-1-4832-3187-7 186 is a Fine number.A000957 1 on an n-set; also number of ordered rooted trees with n edges having root of even degree 2022-06-01 See also 186 References 1 Category:Integers