207 (number) explained

Number:	207
Divisor:	1, 3, 9, 23, 69, 207

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

3 ^{2 ⋅} 23 .

In Mathematics

• 207 is a Wedderburn-Etherington number.^[1]
• There are exactly 207 different matchstick graphs with eight edges.^{[2] [3]}
• 207 is a deficient number, as 207's proper divisors (divisors not including the number itself) only add up to 105:

1+3+9+23+69=105 < 207 .

See also

• Peugeot 207
• List of highways numbered 207

Notes and References

1. Wedderburn-Etherington numbers.
2. Number of nonisomorphic connected graphs that can be drawn in the plane using n unit-length edges.
3. Salvia . Raffaele . 2013 . A catalog for matchstick graphs . 1303.5965. math.CO .