Compare 666666 vs 666667

Property	666666	666667
Type	composite number	prime
Unique factors	6	1
Total factors	7	1
Prime factorization	2¹ × 3² × 7¹ × 11¹ × 13¹ × 37¹	666667¹
Prime factorization	2 × 3 × 3 × 7 × 11 × 13 × 37	666667
Divisors count	96	2
Divisors	1, 2, 3, 6, 7, 9, 11, 13, 14, 18, 21, 22, 26, 33, 37, 39, 42, 63, 66, 74, 77, 78, 91, 99, 111, 117, 126, 143, 154, 182, 198, 222, 231, 234, 259, 273, 286, 333, 407, 429, 462, 481, 518, 546, 666, 693, 777, 814, 819, 858, 962, 1001, 1221, 1287, 1386, 1443, 1554, 1638, 2002, 2331, 2442, 2574, 2849, 2886, 3003, 3367, 3663, 4329, 4662, 5291, 5698, 6006, 6734, 7326, 8547, 8658, 9009, 10101, 10582, 15873, 17094, 18018, 20202, 25641, 30303, 31746, 37037, 47619, 51282, 60606, 74074, 95238, 111111, 222222, 333333, 666666	1, 666667
Number of properties	0	5
Additive primes		21106th
Cousin primes (1st member)		5831st
Isolated primes		42397th
Lucky primes		6184th
Primes		54070th
Roman numberals
Base 2	10100010110000101010₂	10100010110000101011₂
Base 3	1020212111100₃	1020212111101₃
Base 4	2202300222₄	2202300223₄
Base 5	132313131₅	132313132₅
Base 6	22142230₆	22142231₆
Base 7	5444430₇	5444431₇
Base 8	2426052₈	2426053₈
Base 9	1225440₉	1225441₉
Base 10	666666₁₀	666667₁₀
Base 11	415970₁₁	415971₁₁
Base 12	281976₁₂	281977₁₂
Base 13	1a45a0₁₃	1a45a1₁₃
Base 14	134d50₁₄	134d51₁₄
Base 15	d27e6₁₅	d27e7₁₅
Base 16	a2c2a₁₆	a2c2b₁₆