367

Number
$367$ (three hundred and sixty-seven) is:


 * The $73$rd prime number


 * The $14$th of $29$ primes of the form $2 x^2 + 29$:
 * $2 \times 13^2 + 29 = 367$


 * The $3$rd positive integer $n$ after $157, 262$ for which $\phi \left({2 n + 1}\right) < \phi \left({2 n}\right)$:
 * $\phi \left({2 \times 367 + 1}\right) = 336, \phi \left({2 \times 367}\right) = 366$