6910
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 12456
- Proper Divisor Sum (Aliquot Sum)
- 5546
- 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
- 2760
- Möbius Function
- -1
- Radical
- 6910
- 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
- 57
- 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
- yes
- Odd
- no
Appears in sequences
- Number of board configurations in Mu Torere (for one player).at n=8A005655
- Erroneous version of A005470.at n=7A039707
- Numbers whose base-4 representation contains exactly three 2's and three 3's.at n=23A045151
- Number of factorizations into distinct factors with 2 levels of parentheses indexed by prime signatures. A050347(A025487).at n=46A050348
- Coordination sequence for ReO_3 net with respect to oxygen atom O_1.at n=48A066394
- Numbers k such that S(k+2) = d(k)+2, where S(k) is the Kempner function (A002034) and d(k) is the number of divisors of k (A000005).at n=35A073535
- Number of nonisomorphic ways a loop can cross a road (running East-West) 2n times.at n=7A078591
- Numbers n such that the numerator of BernoulliB[n] is divisible by 691.at n=24A119864
- Ceiling((Pi+e)^n).at n=4A121838
- Ulam's spiral (ESE spoke).at n=21A143855
- Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0), ending on the vertical axis and consisting of n steps taken from {(-1, 1), (0, -1), (1, 1)}.at n=12A151380
- a(n) = ceiling(A173510(n)/2).at n=36A173513
- Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=0, k=0 and l=-2.at n=11A176752
- Irregular triangle in which row n has the values of k>n such that Sum_{i=n..k} i^2 is a square.at n=24A184763
- Number of partitions p of n such that (number of numbers of the form 5k + 2 in p) is a part of p.at n=33A241551
- Expansion of chi(x^2) / phi(x) in powers of x where phi(), chi() are Ramanujan theta functions.at n=18A246712
- Linear recurrence, with both signature and original terms = 1,0,1,0,1.at n=23A271970
- Number of set partitions of [n] where adjacent blocks differ in size.at n=9A275313
- Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 118", based on the 5-celled von Neumann neighborhood.at n=25A285908
- Length of n-th iterate of the mapping 00->0010, 01->010, 10->000, starting with 00.at n=14A289019