sequences and series - What's equal this :$sum_{phi(n)=1}^{infty}frac{1}{phi(n)}$?

I'm interesting to know something about convergence of series related to the Euler totient functin, then my question here is :

Question

Is this a convergent sum :$\sum_{\phi(n)=1}^{\infty}\frac{1}{\phi(n)}$ ?

Note: $\phi$ is Euler totient function