Six hundred and fifty thousand in numerals is 650,000
They are: XXVIII = 28
The number 28 is written as XXVIII in Roman numerals.
Seven thousand six hundred and four in numerals is 7,604.
++ XXVIII
170
500,000,000
C is 100.
Two hundred thousand is 200,000
1200 = twelve hundred or one thousand and two hundred
I would write it as: two hundred thousand, two hundred and twenty-two. In numerals: 200,222
It is 605 in Hindu-Arabic numerals and in Roman numerals it is DCV