6776
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 26
- Digital Root
- 8
- Palindromic Number
- yes
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 5
Divisibility
- Divisor Count
- 24
- Divisor Sum
- 15960
- Proper Divisor Sum (Aliquot Sum)
- 9184
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 2640
- Möbius Function
- 0
- Radical
- 154
- Omega Function (Ω)
- 6
- 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
- 36
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- a(n) = (d(n)-r(n))/5, where d = A026054 and r is the periodic sequence with fundamental period (3,3,0,0,4).at n=53A026056
- Palindromic in bases 13 and 10.at n=19A029968
- Numbers with exactly five distinct base-9 digits.at n=14A031986
- Floor( 7*n^2/2 ).at n=44A032525
- Palindromic Super-3 Numbers.at n=1A032751
- Numbers whose set of base-13 digits is {1,3}.at n=23A032920
- Cubeful (i.e., not cubefree) palindromes.at n=25A035133
- Base-10 palindromes that start with 6.at n=19A043041
- Palindromic and divisible by 4.at n=38A045639
- Palindromic and divisible by 7.at n=26A045642
- Palindromic and divisible by 8.at n=19A045643
- Palindromes with exactly 6 prime factors (counted with multiplicity).at n=2A046332
- Palindromes with exactly 6 palindromic prime factors (counted with multiplicity).at n=1A046380
- Palindromes expressible as sum of 2 consecutive palindromes.at n=50A046497
- Palindromic untouchable numbers.at n=14A048187
- a(n) = a(1) + a(2) + ... + a(n-1) - a(m) for n >= 4, where m = n - 1 - 2^p and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = 1, a(2) = 3, and a(3) = 1.at n=14A049918
- Numbers k such that k | sigma_5(k).at n=37A055709
- a(1) = 1; for n >= 1, a(n+1) is smallest number such that the sums of any one, two or three of a(1), ..., a(n) are distinct (repetitions not allowed).at n=19A062065
- Numbers n such that n and its reversal are both multiples of 14.at n=34A062904
- Numbers beginning and ending with their multiplicative digital root.at n=39A064704