85
Number 85: Properties, Factors, and Mathematical Facts
Short answer
The number 85 is an odd composite number with 4 positive divisors. Its prime factorization is 5 × 17. It is also a deficient number, which gives it several notable mathematical relationships.
Is 85 prime?
ClassificationCompositeParityOddDivisor count4AbundanceDeficient
What is the prime factorization of 85?
Prime factorization
5 times 17
What are the divisors of 85?
Divisor count
4
Divisor sum
108
Proper divisor sum
23
- 1
- 5
- 17
- 85
How is 85 classified?
How is 85 represented in other numeral systems?
Roots and powers
Square root
9.219544 Approximate
Cube root
4.396830 Approximate
Nearest lower square
81
Nearest higher square
100
Nearest lower cube
64
Nearest higher cube
125
What are the digit properties of 85?
Which numbers are related to 85?
Why these results are true
- 85 is composite because it has positive divisors other than 1 and itself.
Compare this number
FAQ for 85
- Is 85 prime?
- No
- What is the prime factorization of 85?
- 5 × 17
- Is 85 a perfect square?
- No
- What is 85 in binary?
- 1010101
- What is 85 in Roman numerals?
- LXXXV