518

Number
$518$ (five hundred and eighteen) is:
 * $2 \times 7 \times 37$


 * The $49$th noncototient after $10, 26, 34, 50, \ldots, 386, 394, 404, 412, 436, 466, 470, 474, 482, 490$:
 * $\nexists m \in \Z_{>0}: m - \phi \left({m}\right) = 518$
 * where $\phi \left({m}\right)$ denotes the Euler $\phi$ function


 * The $14$th number after $0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 89, 135, 175$ which is the sum of the increasing powers of its digits taken in order:
 * $5^1 + 1^2 + 8^3 = 518$