Six factors.
1, 3, 9, 71, 213, 639
639 is a composite number. Its positive integer factors are: 1, 3, 9, 71, 213, 639
639 ounces = 39.94 pounds
639 days is about 1.75 years
1, 639 Then by inspection of the number 639 , we note that each number is a multiple of '3' . So '3' is a factor. Also , slightly more 'tricky'. If we add the digits of 639 ; 6 + 3 + 9 = 18 1 + 8 = 9 . This means that the number has '9' is a factor. NB This only applies to factors/multiples of '9' Finally, divide 639 by 71 and/or 213 . If you have a whole number answer (No decimals), then those numbers are also factors of 639. Hence 639/71 = 9 & 329 / 213 = 3 So allthe given numbers are factors of 639.
Idon't know if it is 639 or 595. China has 639
To find out how many times 3 goes into 639, you would perform the division 639 ÷ 3. The quotient is 213, which means that 3 goes into 639 213 times without any remainder. This is because 3 multiplied by 213 equals 639.
3 x 3 x 71 are the prime factors. You should now be able to calculate the composites...
1, 3, 9, 27, 71, 213, 639, 1917
40896
639 days * (24 hours / 1 day) * (60 minutes / 1 hour) = 639*24*60 minutes= 920,160 minutes
There are 71(seventy-one) 9's in 639(six hundred thirty-nine.)