6267
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 21
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 8360
- Proper Divisor Sum (Aliquot Sum)
- 2093
- 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
- 4176
- Möbius Function
- 1
- Radical
- 6267
- 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
- 62
- 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
- no
- Odd
- yes
Appears in sequences
- Number of partitions of n into prime power parts (1 excluded).at n=49A023894
- Every suffix prime and no 0 digits in base 9 (written in base 9).at n=37A024784
- Least term in period of continued fraction for sqrt(n) is 6.at n=32A031430
- 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=4A031577
- Numbers whose base-5 representation contains exactly three 0's and no 1's.at n=42A045169
- Numbers whose base-5 representation contains exactly three 0's and two 2's.at n=18A045186
- a(1) = 5; a(n) is smallest number >= a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime.at n=41A046255
- Numbers k such that 153*2^k-1 is prime.at n=34A050618
- McKay-Thompson series of class 10b for Monster.at n=52A058103
- Coefficients of replicable function number 49a.at n=54A058700
- Number of polyiamonds with n cells, with holes.at n=14A070764
- a(1) = 2, a(n+1) = a(n)-th squarefree number > 1.at n=17A071255
- Duplicate of A071255.at n=17A077673
- Smoothed lengths of the B blocks in analysis of A090822.at n=11A095828
- Numbers k such that 7*10^k + 3*R_k - 2 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=19A103055
- Semiprimes (A001358) whose digit reversal is a triangular number.at n=27A115741
- Binomial transform of the characteristic function of the prime numbers (A010051).at n=14A121497
- Semiprimes s such that s-/+4 are primes.at n=39A125216
- Numbers k that divide 3^((k-1)/2) - 2^((k-1)/2) - 1.at n=44A130061
- Coefficients of replicable function number 49a with a(0) = 3.at n=54A136560