6041
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 6912
- Proper Divisor Sum (Aliquot Sum)
- 871
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5172
- Möbius Function
- 1
- Radical
- 6041
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 67
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- If x and y are terms, so is x*y + 9.at n=35A009350
- Numbers k such that the continued fraction for sqrt(k) has period 66.at n=24A020405
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 34 ones.at n=41A031802
- Number of refactorable integers (A033950) of binary order (A029837) n.at n=18A036761
- a(n)=(s(n)+4)/10, where s(n)=n-th base 10 palindrome that starts with 6.at n=26A043085
- a(n)=T(n,n+2), array T as in A049735.at n=30A049742
- Matrix logarithm of triangle A104980.at n=38A104986
- Positive integers whose sixth power is the sum of seven sixth powers (smallest primitive solutions).at n=30A132410
- Positive integers whose sixth power is the sum of seven sixth powers (smallest primitive solutions).at n=31A132410
- a(n) = ((8+sqrt(5))^n + (8-sqrt(5))^n)/2.at n=4A152109
- Number of partitions of n*(n+1)/2 with at most four parts that can be obtained from grouping (with parentheses) a permutation of the sum 1+2+...+n.at n=13A160438
- Numbers that have an "a" in the middle of their names in Spanish.at n=27A160775
- a(n+5) = a(n+3) + a(n+2) + a(n), with a(1) = a(2) = a(3) = a(4) = a(5) = 1.at n=27A176513
- Numbers k such that there are 2 primes between 100*k and 100*k + 99.at n=9A186394
- Numbers k such that tau(k-1) = (tau(k))^2 = tau(k+1), where tau(k) = A000005(k) (number of divisors of k).at n=20A190266
- Number of n X 4 0..4 arrays with each element equal to the number its horizontal and vertical neighbors within one of itself.at n=10A196013
- Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,3,4,1 for x=0,1,2,3,4.at n=10A196206
- Erroneous version of A275148.at n=11A200948
- Smallest integer m such that each sum of m plus the square of an even number up to 2n is an odd composite numbers.at n=44A203124
- Smallest integer m such that each sum of m plus the square of an even number up to 2n is an odd composite numbers.at n=45A203124