1998691 is an odd 7-digits prime number following 1998690
and preceding 1998692 . In scientific notation, it is written as 1.998691 × 10^6.
The sum of its digits is 43. It has a total of 1 prime factors and 2 positive divisors.
There are 1998690 positive integers (up to 1998691) that are relatively prime to 1998691.
1998691 has 2 divisors, whose sum is 1998692
The reverse of 1998691 is 1968991
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 7
Sum of Digits 43
Digital Root 7
Name
one million nine hundred ninety-eight thousand six hundred ninety-one
Scientific notation
1.998691 × 10^6
Engineering notation
1.998691 × 10^6
Prime Factorization
1998691
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
1998691
Product of the distinct prime numbers
The prime factorization of 1998691 is 1998691.
Since it has a total of 1 prime factors.
7 , 3 , 81 , 1 , 878 , 290 , 3342 , 8085 , 68571 , 72091 , 891140 , 133491 , 4724695 , 7340438 , 34397592 , 87025163 , 393113539 , 976146418 , 5727776336 , 9102701227
n×2
3997382
n×3
5996073
n×4
7994764
n×5
9993455
n÷2
999345.5
n÷3
666230.33333333
n÷3
499672.75
n÷5
399738.2
n2
3994765713481
n3
7984302278643053371
n4
1.5958153105603E+25
n5
3.1895416988791E+31
2 √n
1413.7506852341
3 √n
125.96461171293
4 √n
37.599876133229
5 √n
18.203258287573
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
1998692
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
999346
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1413.7510389032
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999989993456
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1998691 can be divided by 2 positive divisors.
The sum of these divisors (counting 1998691) is 1998692, the average is 999346.
Base
System
Value
2
Binary
111100111111101100011
3
Ternary
10202112200121
4
Quaternary
13213331203
5
Quinary
1002424231
6
Senary
110501111
8
Octal
7477543
10
Decimal
1998691
12
Duodecimal
804797
16
Hexadecimal
1e7f63
20
Vigesimal
c9geb
36
Base36
16u77
md5
16440eb599a41b3f10ea3af4ba909b19
sha1
64e7c0b9ce2e6ade536ea15fc64879a65c8e1253
sha256
81835599d126d9836372be7dac62b86940dd833b04d3d94ceb820fb8ad6a91ee
sha512
64ed8fc67fb0f4f6a29d7518dbe1df129543c76cf1efc93b3884df0c9c75fcfc2622d7d02e09220e66099ae97653ac5a15fdb40ed7e6e095b863ee5ff4a6d8d4
ripemd-160
08f26f642388c2a58b5b83fe19cc6a4f7a50b240
Diameter
3997382
Circumference
12558145.924792
Area
12549926618284
Volume
3.3444567176834E+19
Surface area
50199706473137
Circumference
12558145.924792
Perimeter
7994764
Area
3994765713481
Diagonal
2826575.919193
Surface area
23968594280886
Volume
7984302278643053371
Space diagonal
3461834.3606306
Perimeter
5996073
Area
1729784295020.8
Altitude
1730917.1803153
Surface area
1729784295020.8
Volume
9.4095904737862E+17
Height
942191.97306435