1681985 is an odd 7-digits composite number following 1681984
and preceding 1681986 . In scientific notation, it is written as 1.681985 × 10^6.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 1345584 positive integers (up to 1681985) that are relatively prime to 1681985.
1681985 has 4 divisors, whose sum is 2018388
The reverse of 1681985 is 5891861
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 38
Digital Root 2
Name
one million six hundred eighty-one thousand nine hundred eighty-five
Scientific notation
1.681985 × 10^6
Engineering notation
1.681985 × 10^6
Prime Factorization
5 × 336397
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
1681985
Product of the distinct prime numbers
The prime factorization of 1681985 is 5 × 336397.
Since it has a total of 2 prime factors.
7 , 1 , 78 , 84 , 196 , 755 , 7633 , 7706 , 85257 , 79284 , 4263 , 676373 , 6396513 , 8812813 , 11533369 , 39012334 , 79225421 , 407188221 , 2781272552 , 2183812363
n×2
3363970
n×3
5045955
n×4
6727940
n×5
8409925
n÷2
840992.5
n÷3
560661.66666667
n÷3
420496.25
n÷5
336397
n2
2829073540225
n3
4758459258555346625
n4
8.0036570960012E+24
n5
1.3462031180618E+31
2 √n
1296.9136440026
3 √n
118.92524080614
4 √n
36.012687264387
5 √n
17.585892890107
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1681984
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1681985 can be divided by 4 positive divisors.
The sum of these divisors (counting 1681985) is 1, the average is 0.25.
Base
System
Value
2
Binary
110011010101001000001
3
Ternary
10011110020202
4
Quaternary
12122221001
5
Quinary
412310420
6
Senary
100014545
8
Octal
6325101
10
Decimal
1681985
12
Duodecimal
691455
16
Hexadecimal
19aa41
20
Vigesimal
aa4j5
36
Base36
101tt
md5
36eb2bda6ba546cf8624c9dc3b78a340
sha1
10b93cc82569c49c20d3f0ad7d1b9eb38a51a5e8
sha256
41e4b55b847fa6967535dad1187e7a331e9714e6902f5ed524c2e37242b845aa
sha512
67dad00de3be747a2057d46f75272f9835c9d19e7b898aa21821619bb5b23491aff055d1609525462a8627ee8c5441fa5077d1695209b8c240a97e0406d0c54f
ripemd-160
c5b7d6657dc392e6c09b7154b05f1889f5ed7282
Diameter
3363970
Circumference
10568223.438896
Area
8887796650436.1
Volume
1.9932187532112E+19
Surface area
35551186601745
Circumference
10568223.438896
Perimeter
6727940
Area
2829073540225
Diagonal
2378685.9987081
Surface area
16974441241350
Volume
4758459258555346625
Space diagonal
2913283.4775687
Perimeter
5045955
Area
1225024777504.6
Altitude
1456641.7387844
Surface area
1225024777504.6
Volume
5.6078980162073E+17
Height
792895.3329027