Number
-997
- Negative
- Odd
- 3 digits
-997 is an odd 3-digit integer and the negative of 997. It has 2 divisors and a digital root of 7.
Number properties
ParityOddnot divisible by 2
SignNegative
Absolute value997
Digit count3
Digit sum25
Digital root7repeated digit sum
PalindromicNoreads differently backwards
Factors & divisors
Prime factorisation−1 × 997
Distinct prime factors1997
Number of divisors2
Sum of divisors σ(n)998
SquarefreeYesno repeated prime factor
All divisors1, 9972 in total
Arithmetic
Representations
Decimal-997
Binary111110010110 bits
Octal1745
Hexadecimal3E5
Base 36RP
In wordsminus nine hundred and ninety-seven
Ordinalminus nine hundred and ninety-seventh
Scientific notation-9.97 × 10^2
Engineering notation-997
Powers & multiples
-997 to the power 2994,009
-997 to the power 3-991,026,973
-997 to the power 4988,053,892,081
-997 to the power 5-985,089,730,404,757
First ten multiples-997, -1,994, -2,991, -3,988, -4,985, -5,982, -6,979, -7,976, -8,973, -9,970
Powers of twoBetween 2^9 (512) and 2^10 (1,024)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 1
Divisible by 4No, remainder 1
Divisible by 5No, remainder 2
Divisible by 6No, remainder 1
Divisible by 7No, remainder 3
Divisible by 8No, remainder 5
Divisible by 9No, remainder 7
Divisible by 10No, remainder 7
Divisible by 11No, remainder 7
Divisible by 12No, remainder 1
Divisible by 100No, remainder 97
As a percentage & fraction
As a percentage-99,700%
-997% as a decimal-9.97
-997% of 100-997
-997% of 1,000-9,970
As a fraction of 100-997/100
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