6734
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 12768
- Proper Divisor Sum (Aliquot Sum)
- 6034
- 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
- 2592
- Möbius Function
- 1
- Radical
- 6734
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 4
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
- 88
- 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
- Numbers k where |cos(k)| (or |cosec(k)| or |cot(k)|) decreases monotonically to 0; also numbers k where |tan(k)| (or |sec(k)|, or |sin(k)|) increases.at n=24A004112
- Least k such that tan(k) > tan(a(n-1)), for n >= 1, where a(0) = 0.at n=35A024814
- T(n,1) + T(n,2) + ... T(n,n), where T is the array in A026098.at n=21A026101
- Numbers that, when expressed in base 3 and then interpreted in base 10, yield a multiple of the original number.at n=29A032537
- Numbers ending with '4' that are the difference of two positive cubes.at n=17A038859
- Numerators of continued fraction convergents to sqrt(981).at n=7A042898
- a(n) = A033001(n)/4.at n=37A043307
- Sin(n) decreases monotonically to -1.at n=14A046964
- Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 6 skipped primes.at n=38A050773
- Numbers k that, when expressed in base 5 and then interpreted in base 8, give a multiple of k.at n=27A062930
- Numbers k such that floor(tan(k)) > floor(tan(m)) for all m < k.at n=32A063537
- Numbers n such that sigma(4n+1)=6n.at n=6A067685
- Squarefree numbers having exactly three prime gaps.at n=33A073489
- Numbers having exactly three prime gaps in their factorization.at n=39A073495
- a(0)=1; a(n) is the smallest integer > a(n-1) such that sin(a(n)) is closer to an integer (here 0 or -1) than sin(a(n-1)).at n=13A079037
- Natural numbers of the form p^3 - q^3, where p and q are primes.at n=27A086120
- Positive square-root of terms of the self-convolution of A087150.at n=28A087151
- Least k such that decimal representation of k*n contains only digits 0 and 2.at n=32A096681
- Numbers n such that n and its digit reversal R(n) both are difference of positive cubes.at n=13A109879
- Expansion of (-1-8*x-12*x^2-4*x^3+4*x^4) / ((x-1)*(3*x^2+3*x+1)*(2*x^3+2*x^2+4*x+1)).at n=7A110684