Apollo - Patron of medicine, mathematics and music. Although the Pythagoreans did not espouse a religious practice, they revered Apollo.

The Pythian Apollo
From Historia Deorum Fatidicorum
Apollo, the twin brother of Diana, was the son of Jupiter and Latona. Apollo
was fully adult at the time of his birth. He was considered to be the first
physician and the inventor of music and song. The Greeks also acclaimed him
to be the father of the bow and arrow. The famous temple of Apollo at Delphi
was rebuilt five times. The first temple was formed only of laurel branches;
the second was somewhat similar; the third was circular and entirely of
brass; and the fourth and fifth were probably of marble, of considerable
size and great beauty. No other oracle in Greece equaled in magnificence
that of Delphi in the zenith of its power. Writers declared that it
contained many statues of solid gold and silver, marvelous ornaments, and
implements of the most valuable materials and beautiful workmanship, donated
by princes and kings who came from all parts of the civilized world to
consult the spirit of Apollo dwelling in this sanctuary.
Manley P. Hall