  For a Seifert fibered homology sphere we show that the q-series Z-hat
invariant introduced by Gukov, Pei, Putrov and Vafa is a resummation of the
Ohtsuki serie. We show that for every even level k there exists a full
asymptotic expansion of Z-hat for q tending to a certain k'th root of unity and
in particular that the limit exists and is equal to the WRT quantum invariant.
We show that the poles of the Borel transform of the Ohtsuki series coincide
with the classical complex Chern-Simons values, which we further show
classifies the corresponding components of the moduli space of flat SL(2,
C)-connections.
