Rotation Period ~ 25 to 30 days, Mass = 1.99x1033 g, Radius =
6.96x1010 cm,
===> (v2/R)/(GM/R2) = 1.5x10-5!
In order for rotation to be dynamically important, the Sun would have to spin once every few hours.
Even PSR J0537-6910 which spins at 60 Hz is slowly rotating.
Millisecond Pulsars:
At 640 Hz, rotation (and rotationally driven instabilities) are just starting to become interesting. Further, because the equation-of-state of neutron star matter is uncertain (because of uncertainty in the strong interaction), it is plausible that neutron stars have radii as large as 16 km ===> the acceleration ratio is ~ 0.3 and rotation cannot be ignored (e.g., Pringle & Papaloizou 1975).