Compare 643639 vs 643640

Property	643639	643640
Type	prime	composite number
Unique factors	1	3
Total factors	1	5
Prime factorization	643639¹	2³ × 5¹ × 16091¹
Prime factorization	643639	2 × 2 × 2 × 5 × 16091
Divisors count	2	16
Divisors	1, 643639	1, 2, 4, 5, 8, 10, 20, 40, 16091, 32182, 64364, 80455, 128728, 160910, 321820, 643640
Number of properties	4	0
Additive primes	20458th
Isolated primes	41023rd
Primes	52334th
Sexy primes (2nd member)	11333rd
Roman numberals
Base 2	10011101001000110111₂	10011101001000111000₂
Base 3	1012200220111₃	1012200220112₃
Base 4	2131020313₄	2131020320₄
Base 5	131044024₅	131044030₅
Base 6	21443451₆	21443452₆
Base 7	5320333₇	5320334₇
Base 8	2351067₈	2351070₈
Base 9	1180814₉	1180815₉
Base 10	643639₁₀	643640₁₀
Base 11	3aa637₁₁	3aa638₁₁
Base 12	270587₁₂	270588₁₂
Base 13	196c69₁₃	196c6a₁₃
Base 14	12a7c3₁₄	12a7c4₁₄
Base 15	caa94₁₅	caa95₁₅
Base 16	9d237₁₆	9d238₁₆