86

Number
$86$ (eighty-six) is:
 * $2 \times 43$


 * The $10$th nontotient after $14, 26, 34, 38, 50, 62, 68, 74, 76$:
 * $\nexists m \in \Z_{>0}: \phi \left({m}\right) = 86$
 * where $\phi \left({m}\right)$ denotes the Euler $\phi$ function


 * The $7$th noncototient after $10, 26, 34, 50, 52, 58$:
 * $\nexists m \in \Z_{>0}: m - \phi \left({m}\right) = 86$
 * where $\phi \left({m}\right)$ denotes the Euler $\phi$ function