8061
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 10752
- Proper Divisor Sum (Aliquot Sum)
- 2691
- 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
- 5372
- Möbius Function
- 1
- Radical
- 8061
- 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
- 96
- 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
- Numbers k such that 39*2^k + 1 is prime.at n=34A002269
- a(n) = n^3 + 3*n + 1.at n=20A005491
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 58 ones.at n=9A031826
- Number of partitions satisfying 0 < cn(1,5) + cn(4,5).at n=32A039898
- (s(n)+2)/10, where s(n)=n-th base 10 palindrome that starts with 8.at n=28A043087
- Numbers whose base-4 representation contains exactly three 1's and four 3's.at n=11A045128
- Numbers k such that 31*2^k-1 is prime.at n=23A050541
- Semiprimes in A056106.at n=18A113524
- a(n) = 8*n^2 - 4*n - 3.at n=31A118057
- Numbers n such that pi(n^2)=pi((n-k)^2)+n, where k=A000193(n).at n=35A137271
- a(n) = prime(2^n) - n^2.at n=9A141102
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 0), (-1, 1, 1), (1, 0, 1), (1, 1, -1)}.at n=8A148918
- a(n) = 12*n^2 + 22*n + 11.at n=25A154106
- Triangle of coefficients of polynomials H(n,x)=(U^n+L^n)/2+(U^n-L^n)/(2d), where U=x+d, L=x-d, d=(x+4)^(1/2).at n=59A163762
- Number of base-3 pyramids of height n.at n=20A186507
- Ceiling((n+1/n)^3).at n=19A197773
- Conjectured number of digits in highest power of n with no four consecutive identical digits.at n=33A216142
- Numbers n such that n*2^521 - 1 is prime.at n=29A265498
- Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 950", based on the 5-celled von Neumann neighborhood.at n=6A273828
- Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 813", based on the 5-celled von Neumann neighborhood.at n=12A284182