Euler Phi Function of 974

Example of Euler Phi Function of 2 times Odd Prime

$\phi \left({974}\right) = 486$

where $\phi$ denotes the Euler $\phi$ Function.

Proof

We have that:

$974 = 2 \times 487$

Thus:

\(\ds \phi \left({974}\right)\)

\(=\)

\(\ds 487 - 1\)

Euler Phi Function of 2 times Odd Prime

\(\ds \)

\(=\)

\(\ds 486\)

$\blacksquare$