6061
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 7200
- Proper Divisor Sum (Aliquot Sum)
- 1139
- 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
- 5040
- Möbius Function
- -1
- Radical
- 6061
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- 142
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- Pseudoprimes to base 12.at n=28A020140
- Pseudoprimes to base 30.at n=33A020158
- Pseudoprimes to base 75.at n=33A020203
- Numbers k such that the continued fraction for sqrt(k) has period 62.at n=22A020401
- a(n) = n*(25*n + 1)/2.at n=22A022283
- Pair up the numbers.at n=30A030656
- Lucky numbers with size of gaps equal to 18 (lower terms).at n=33A031900
- Lucky numbers that are decimal concatenations of n with n + 1.at n=8A032651
- a(n)=(s(n)+4)/10, where s(n)=n-th base 10 palindrome that starts with 6.at n=28A043085
- Consider all integer triples (i,j,k), j >= k>0, with i^3=binomial(j+2,3)+binomial(k+2,3), ordered by increasing i; sequence gives j values.at n=10A054209
- One half of sixth column (m=5) of triangle A060556.at n=4A060559
- a(n) is the first of a triple of consecutive integers, each of which is the product of three distinct primes.at n=6A066509
- A Wallis pair (x,y) satisfies sigma(x^2) = sigma(y^2); sequence gives y's for indecomposable Wallis pairs with x < y (ordered by values of x).at n=16A075769
- a(n) = A076969(n)^(1/3).at n=34A076970
- a(n) = the number of squares with at most n digits and first digit 1.at n=8A083379
- Total number of edges in all trees on n nodes.at n=11A095349
- Partial sums of orders of finite perfect groups (A060793).at n=11A121513
- Composite numbers such that the square mean of their prime factors is a nonprime integer (where the prime factors are taken with multiplicity and the square mean of c and d is sqrt((c^2+d^2)/2)).at n=19A134602
- Number of n X n binary arrays with all ones connected only in a 1100-0111-0100 pattern in any orientation.at n=6A146461
- Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1100-0111-0100 pattern in any orientation.at n=14A146463