6614
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 9924
- Proper Divisor Sum (Aliquot Sum)
- 3310
- 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
- 3306
- Möbius Function
- 1
- Radical
- 6614
- 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
- 75
- 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
- yes
- Odd
- no
Appears in sequences
- Powers of cube root of 14 rounded up.at n=10A018017
- Numbers k such that the continued fraction for sqrt(k) has period 74.at n=15A020413
- Number of partitions of n into 8 unordered relatively prime parts.at n=37A023028
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 80.at n=13A031578
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 36 ones.at n=24A031804
- Numbers k such that 7*2^k+1 is prime.at n=21A032353
- Numbers in which all pairs of consecutive base-5 digits differ by 2.at n=37A033083
- Numbers whose base-5 representation contains exactly three 2's and two 4's.at n=21A045291
- Dimension of the space of weight n cuspidal newforms for Gamma_1( 97 ).at n=17A063370
- Even elements of A085493.at n=11A106431
- Semiprimes of the form 2*(m^2 + m + 1) (implying that m^2 + m + 1 is a prime).at n=19A107317
- a(n) = A000045(n) - A000931(n).at n=20A129973
- a(n) = 441*n - 1.at n=14A158319
- a(2*n) = n*a(n); a(2*n+1) = n*a(n) + a(n+1), with a(1) = 1.at n=44A176528
- a(n) = (n^3 - 3n^2 + 14n - 6)/6.at n=34A180415
- Number of weighted lattice paths in L_n having no (1,0)-steps at level 0. The members of L_n are paths of weight n that start at (0,0), end on the horizontal axis and whose steps are of the following four kinds: an (1,0)-step with weight 1, an (1,0)-step with weight 2, a (1,1)-step with weight 2, and a (1,-1)-step with weight 1. The weight of a path is the sum of the weights of its steps.at n=13A182889
- Number of 0..n arrays x(0..4) of 5 elements with zero 3rd differences.at n=36A200083
- Consider the ordered Goldbach partitions of the even numbers m. Then a(n) is the least m which contains prime(n) such partitions composed of odd primes.at n=36A216047
- Minimal number (in decimal representation) with n nonprime substrings in base-3 representation (substrings with leading zeros are considered to be nonprime).at n=38A217103
- Numbers whose sum of anti-divisors is equal to the sum of the divisors of their arithmetic derivative.at n=13A249912