It's about seven-and-a-half times the number of Keys on a Piano.
It's about one-tenth the number of Bishops in the Catholic Church.
In other words, 670 is 0.1252 times the count of Bishops in the Catholic Church, and the count of Bishops in the Catholic Church is 7.987 times that amount.(2015 figures; total Latin and Eastern Church figures; including Pope)
As of 2015, there are 5,352 bishops in the Catholic Church. These bishops supervise a total of 3,127 dioceses, archdioceses, and other administrative regions.
It's about nine-and-a-half times the number of Submarines in the US Navy.
It's about twelve times the number of Countries in Africa.
In other words, the count of Countries in Africa is 0.083 times 670.(2016 figures) (sovereign states recognized by the UN only)
The continent of Africa includes 54 sovereign countries recognized by the United Nations as of 2016. It is the second-most populous continent in the world, with 1.1 billion inhabitants.
It's about one-fifteenth the number of Blue Whales in the World.
In other words, the count of Blue Whales in the World is 13 times 670.(Balaenoptera musculus) (2002 estimates)
The worldwide population of blue whales (as of 2002) is estimated to be between 5,000 and 12,000. An estimated 378,200 blue whales were killed during the height of whaling in the late nineteenth and early twentieth centures
It's about one-fifteenth the number of Written Characters in the Chinese Language.
In other words, 670 is 0.07163 times the count of Written Characters in the Chinese Language, and the count of Written Characters in the Chinese Language is 13.96 times that amount.(zhōngwén, 中文) (Hànzì, 汉字/漢字; Shuowen Jiezi count; distinct characters)
According to the Han Dynasty dictionary, Shuowen Jiezi (說文解字), there are 9,353 distinct Han characters used to depict the Chinese language. Fluency in written Chinese requires mastery of 4,000 - 5,000 of these characters.
It's about fourteen times the number of Teeth in a Great White Shark's Mouth.
In other words, the count of Teeth in a Great White Shark's Mouth is 0.071 times 670.(Carcharodon carcharias) (average; including developing rows)
A Great White Shark has 48 exposed teeth on their upper and lower jaws. Behind these exposed teeth are developing teeth — up to 300 in about 5 rows. The sharks will continuously lose and replace the exposed teeth throughout their lives.