340

Number
$340$ (three hundred and forty) is:


 * $2^2 \times 5 \times 17$


 * The $33$rd noncototient after $10$, $26$, $34$, $50$, $\ldots$, $244$, $260$, $266$, $268$, $274$, $290$, $292$, $298$, $310$, $326$:
 * $\nexists m \in \Z_{>0}: m - \phi \left({m}\right) = 340$
 * where $\phi \left({m}\right)$ denotes the Euler $\phi$ function