I did find one place that calculates the luminosity of a neutron star at 1 million K and a diameter of 20 km (more or less average for neutron stars) to be 18% that of the sun. Red dwarves peak at only 10% the luminosity of the sun. That's a lot of energy from such a little ball.

However, luminosity appplies to the entire em-radiation spectrum and red dwarves barely reach beyond visible light, while neutron stars have most of their radiation as x-rays, which means most of it would be invisible to the eye.
So I would estimate that the visible light from a neutron star would be significantly lower than a red dwarf. Yet even when it seems you are standing in moonlight (coming from what looks like just a star), you would get pretty roasted by x-rays and UV radiation.