# 207 (number)

 ← 206 207 208 →
Cardinaltwo hundred seven
Ordinal207th
(two hundred seventh)
Factorization32 × 23
Divisors1, 3, 9, 23, 69, 207
Greek numeralΣΖ´
Roman numeralCCVII
Binary110011112
Ternary212003
Quaternary30334
Quinary13125
Senary5436
Octal3178
Duodecimal15312
VigesimalA720
Base 365R36

207 (two hundred [and] seven) is the natural number following 206 and preceding 208. It is an odd composite number with a prime factorization of ${\displaystyle 3^{2}\cdot 23}$.

## In Mathematics

207 is a Wedderburn-Etherington number.[1] There are exactly 207 different matchstick graphs with eight edges.[2][3] 207 is also a deficient number, as 207's proper divisors (divisors not including the number itself) only add up to 105: ${\displaystyle 1+3+9+23+69=105<207.}$