6287
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 6288
- Proper Divisor Sum (Aliquot Sum)
- 1
- 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
- 6286
- Möbius Function
- -1
- Radical
- 6287
- Omega Function (Ω)
- 1
- Little Omega Function (ω)
- 1
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
- 106
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 818
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Numbers k such that the continued fraction for sqrt(k) has period 52.at n=37A020391
- 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 79.at n=6A031577
- Primes of form x^2 + 94*y^2.at n=42A033204
- Denominators of continued fraction convergents to sqrt(350).at n=9A041663
- Numerators of continued fraction convergents to sqrt(386).at n=6A041732
- Numbers having three 5's in base 9.at n=31A043475
- Numbers whose base-5 representation contains exactly two 0's and three 2's.at n=16A045183
- Primes p such that pp'-2 is prime, where p' denotes the next prime after p.at n=37A048797
- Fourth term of weak prime quintets: p(m-2)-p(m-3) < p(m-1)-p(m-2) < p(m)-p(m-1) < p(m+1)-p(m).at n=15A054826
- a(1) = 7; a(n) is smallest number > a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime.at n=40A074343
- Expansion of (1-x)^(-1)/(1+x-2*x^2-x^3).at n=16A077897
- Balanced primes of order two.at n=32A082077
- Primes in which odd positioned digits are prime and even positioned digits are composite. The least significant digit is taken to be the first digit.at n=37A083820
- Number of partitions of n without rotational symmetry (or 1-fold symmetry).at n=31A085436
- Numbers k such that (2^k + 1)^2 - 2 = 4^k + 2^(k+1) - 1 is prime.at n=34A091513
- Number of subsets S of {1,2,...,n} which contain a number that is greater than the sum of the other numbers in S.at n=26A095944
- Number of partitions of n in which number of least parts is equal to least part.at n=39A096403
- Frequency of the hexadecimal 6 in the first 10^n hexadecimal digits of Pi.at n=4A099339
- Smallest prime factor in product of previous terms +1 or -1.at n=26A102926
- Primes from merging of 4 successive digits in decimal expansion of Zeta(2) or (Pi^2)/6.at n=11A105377