Hi 
morgandalf
1. It will be around 6.6mb , in fact a little more because the APK contains other stuff used by Android
2. According to this Ludei's Official Page :
COCOONJS, THE ADVANCED SURVIVAL GUIDE.
The memory use is the memory allocated when the image is rendered by the graphics engine. If you plan to publish your App on google play you may encounter some memory problems. By experience, I use CocoonJS and for each picture the opengl engine will allocate for your picture size 512x512x4 octets. So the total memory used should be : 512x512x4x600 = 600Mb
May be you should try to limit the frames number...