Compare 639647 vs 639657

Property	639647	639657
Type	prime	composite number
Unique factors	1	3
Total factors	1	6
Prime factorization	639647¹	3⁴ × 53¹ × 149¹
Prime factorization	639647	3 × 3 × 3 × 3 × 53 × 149
Divisors count	2	20
Divisors	1, 639647	1, 3, 9, 27, 53, 81, 149, 159, 447, 477, 1341, 1431, 4023, 4293, 7897, 12069, 23691, 71073, 213219, 639657
Number of properties	4	0
Centered heptagonal primes	87th
Chen primes	20362nd
Isolated primes	40794th
Primes	52049th
Roman numberals
Base 2	10011100001010011111₂	10011100001010101001₂
Base 3	1012111102122₃	1012111110000₃
Base 4	2130022133₄	2130022221₄
Base 5	130432042₅	130432112₅
Base 6	21413155₆	21413213₆
Base 7	5302601₇	5302614₇
Base 8	2341237₈	2341251₈
Base 9	1174378₉	1174400₉
Base 10	639647₁₀	639657₁₀
Base 11	3a7638₁₁	3a7647₁₁
Base 12	26a1bb₁₂	26a209₁₂
Base 13	1951b8₁₃	1951c5₁₃
Base 14	129171₁₄	12917b₁₄
Base 15	c97d2₁₅	c97dc₁₅
Base 16	9c29f₁₆	9c2a9₁₆