Compare 640 vs 648

Property	640	648
Type	composite number	composite number
Unique factors	2	2
Total factors	8	7
Prime factorization	2⁷ × 5¹	2³ × 3⁴
Prime factorization	2 × 2 × 2 × 2 × 2 × 2 × 2 × 5	2 × 2 × 2 × 3 × 3 × 3 × 3
Divisors count	16	20
Divisors	1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640	1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648
Number of properties	0	0
Roman numberals	DCXL	DCXLVIII
Base 2	1010000000₂	1010001000₂
Base 3	212201₃	220000₃
Base 4	22000₄	22020₄
Base 5	10030₅	10043₅
Base 6	2544₆	3000₆
Base 7	1603₇	1614₇
Base 8	1200₈	1210₈
Base 9	781₉	800₉
Base 10	640₁₀	648₁₀
Base 11	532₁₁	53a₁₁
Base 12	454₁₂	460₁₂
Base 13	3a3₁₃	3ab₁₃
Base 14	33a₁₄	344₁₄
Base 15	2ca₁₅	2d3₁₅
Base 16	280₁₆	288₁₆