366

Number
$366$ (three hundred and sixty-six) is:


 * $2 \times 3 \times 61$


 * The $37$th noncototient after $10, 26, 34, 50, \ldots, 290, 292, 298, 310, 326, 340, 344, 346, 362$:
 * $\nexists m \in \Z_{>0}: m - \phi \left({m}\right) = 366$
 * where $\phi \left({m}\right)$ denotes the Euler $\phi$ function


 * The $4$th integer solution to $\sigma \left({n}\right) = \sigma \left({n + 2}\right)$ after $33, 54, 284$:
 * $\sigma \left({366}\right) = 744 = \sigma \left({368}\right)$