3065
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3684
- Proper Divisor Sum (Aliquot Sum)
- 619
- 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
- 2448
- Möbius Function
- 1
- Radical
- 3065
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 154
- 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
- Coordination sequence T3 for Zeolite Code AFR.at n=42A008021
- Coordination sequence T3 for Zeolite Code AFS and BPH.at n=42A008025
- Coordination sequence T1 for Zeolite Code DAC.at n=35A008067
- Coordination sequence T2 for Banalsite.at n=33A008250
- Expansion of log(1 + tan(x)*exp(x)).at n=9A009376
- Coordination sequence T2 for Zeolite Code -CHI.at n=35A009847
- Number of partitions of n into divisors of n.at n=55A018818
- Number of squares on infinite chessboard at <= n knight's moves from a fixed square.at n=15A018836
- Numbers k such that the continued fraction for sqrt(k) has period 17.at n=18A020356
- Index of 6^n within the sequence of the numbers of the form 2^i*6^j.at n=48A025712
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 5.at n=19A031418
- Numbers of the form (q^2+(q+1)^2)*(r^2+(r+1)^2), q,r >= 1.at n=31A033682
- a(n) = T(n,n), array T given by A047858.at n=8A036542
- Coordination sequence T3 for Zeolite Code STF.at n=37A038442
- Numbers n such that string 6,5 occurs in the base 10 representation of n but not of n-1.at n=33A044397
- Numbers n such that string 6,5 occurs in the base 10 representation of n but not of n+1.at n=33A044778
- a(n) = T(8,n), array T given by A047858.at n=8A048469
- Numbers k such that 75*2^k-1 is prime.at n=31A050563
- Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 15.at n=4A051980
- Number of n-crossing hyperbolic knots having symmetry group D2.at n=14A052416