It is also correct to six significant figures since it has six figures.

If it needs to be correct to four significant figures then discard the .....59 leaving 36.47
 
 

36.4739 is correct to six significant figures.

36.473 is correct to five.

36.47 is correct to four.

36.4 is correct to three.

36.0 is correct to two.

30.0 is correct to one.
 

364759 is correct to six.

364790 is correct to five.

364700 is correct to four.

364000 is correct to three.

360000 is correct to two.

300000 is correct to one.
 

0.00364 is correct to three.

0.0036 is correct to two.

0.003 is correct to one.