474

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Number

$474$ (four hundred and seventy-four) is:

$2 \times 3 \times 79$

The $37$th untouchable number after $2$, $5$, $52$, $88$, $96$, $120$, $124$, $\ldots$, $324$, $326$, $336$, $342$, $372$, $406$, $408$, $426$, $430$, $448$, $472$

The $46$th noncototient after $10$, $26$, $34$, $50$, $\ldots$, $344$, $346$, $362$, $366$, $372$, $386$, $394$, $404$, $412$, $436$, $466$, $470$:

$\nexists m \in \Z_{>0}: m - \map \phi m = 474$

where $\map \phi m$ denotes the Euler $\phi$ function

Also see

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