636
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- yes
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 1512
- Proper Divisor Sum (Aliquot Sum)
- 876
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 208
- Möbius Function
- 0
- Radical
- 318
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 3
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
- 56
- Smith Number
- yes
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
Names
- German
- sechshundertsechsunddreißig· ordinal: sechshundertsechsunddreißigste
- English
- six hundred thirty-six· ordinal: six hundred thirty-sixth
- Spanish
- seiscientos treinta y seis· ordinal: 636º
- French
- six cent trente-six· ordinal: six cent trente-sixième
- Italian
- seicentotrentasei· ordinal: 636º
- Latin
- sescenti triginta sex· ordinal: 636.
- Portuguese
- seiscentos e trinta e seis· ordinal: 636º
Appears in sequences
- Generalized class numbers c_(n,1).at n=16A000233
- Hexanacci numbers with a(0) = ... = a(5) = 1.at n=13A000383
- Number of compositions of n into 3 ordered relatively prime parts.at n=38A000741
- Expansion of chi(x)^10 / phi(x)^4 in powers of x where phi(), chi() are Ramanujan theta functions.at n=10A002512
- Expansion of (theta_3(z)*theta_3(7z)+theta_2(z)*theta_2(7z))^3.at n=11A002653
- Number of extended Skolem sequences of order n.at n=6A004077
- Number of n-step self-avoiding walks on hexagonal lattice from (0,0) to (0,3).at n=4A005549
- Number of achiral planted trees with n nodes.at n=14A005627
- Number of acyclic disubstituted alkanes with n carbon atoms and distinct substituents.at n=6A005960
- a(n) = 2*a(n-1) + a(n-2) - a(n-3), with a(0) = a(1) = 0, a(2) = 1.at n=10A006054
- Smith (or joke) numbers: composite numbers k such that sum of digits of k = sum of digits of prime factors of k (counted with multiplicity).at n=28A006753
- The generalized Conway-Guy sequence w^{3}.at n=11A006757
- Oscillates under partition transform.at n=30A007213
- Expansion of susceptibility series related to Potts model.at n=3A007277
- Impractical numbers: even abundant numbers (A173490) that are not practical(2) (A007620).at n=31A007621
- Number of unreformed permutations of {1,...,n}.at n=5A007711
- G.f. is 1 - 1/f(x), where f(x) = 1+x+3*x^2+9*x^3+32*x^4+... is 1/x times g.f. for A063020.at n=6A007858
- Coordination sequence T6 for Zeolite Code BOG.at n=18A008054
- Coordination sequence T1 for Zeolite Code FAU.at n=21A008105
- Coordination sequence T1 for Zeolite Code GME and AFX.at n=19A008110