The ImageMagick basket of command-line tools can be used to do almost anything to a set of image files. But, sometimes figuring out the options to pass the tool can be too much work for a small batch operation. IrfanView, (still) the best image viewer on Windows is the next best tool for such quick operations.
Choose File → Batch Conversion / Rename to apply batch operations.
Rename files. All sorts of numbering can be added as prefix or suffix to the files.
Crop, resize, rotate, flip or almost anything imaginable can be applied on the files.