470

Number
$470$ (four hundred and seventy) is:


 * $2 \times 5 \times 47$


 * The $45$th noncototient after $10, 26, 34, 50, \ldots, 344, 346, 362, 366, 372, 386, 394, 404, 412, 436, 466$:
 * $\nexists m \in \Z_{>0}: m - \phi \left({m}\right) = 470$
 * where $\phi \left({m}\right)$ denotes the Euler $\phi$ function