MS-DOS 6.22 has no published minimum requirement! as far as I know. It will work on just about any 8086 IBM Comparable PC with 360kb RAM, Floppy Disk Drive and at least a 10MB Hard Drive! (Versions were released on 3.5" 720kb LD & 5.25" 1.2MB Disks, as well as on RAM Disks, But most if not all versions found today are on 1.44MB HD Disks)and a Mono Display.
No official requirements have been published for MS-DOS 6.22. Based upon user's experience, you'll need a minimum of 256k of RAM and a 360k floppy.
The factors of 622 are 1, 2, 311, 622
Divide by 622.
622
equivalent fractions of 622 = 622/1, 1244/2, 1866/3, ...
1285 + 622 = 1907
1, 2, 311, 622
622 = seiscientos veintidos
72
622 / 2 = 311
311
622 = 2 x 311
622+285 = 907