166

Number
$166$ (one hundred and sixty-six) is:


 * $2 \times 83$


 * The $2$nd of the $2$nd ordered triple of consecutive integers after $\left({105, 106, 107}\right)$ that have Euler $\phi$ values which are strictly increasing:
 * $\phi \left({165}\right) = 80$, $\phi \left({166}\right) = 82$, $\phi \left({167}\right) = 166$