622
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 936
- Proper Divisor Sum (Aliquot Sum)
- 314
- 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
- 310
- Möbius Function
- 1
- Radical
- 622
- 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
- 87
- Smith 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
- yes
- Odd
- no
Names
- German
- sechshundertzweiundzwanzig· ordinal: sechshundertzweiundzwanzigste
- English
- six hundred twenty-two· ordinal: six hundred twenty-second
- Spanish
- seiscientos veintidós· ordinal: 622º
- French
- six cent vingt-deux· ordinal: six cent vingt-deuxième
- Italian
- seicentoventidue· ordinal: 622º
- Latin
- sescenti viginti duo· ordinal: 622.
- Portuguese
- seiscentos e vinte e dois· ordinal: 622º
Appears in sequences
- Fine's sequence (or Fine numbers): number of relations of valence >= 1 on an n-set; also number of ordered rooted trees with n nodes having root of even degree.at n=9A000957
- Expansion of 1/((1-x)^2*(1-x^2)*(1-x^5)).at n=29A001304
- Number of ways of making change for n cents using coins of 1, 2, 4, 10 cents.at n=58A001362
- Number of ways of making change for n cents using coins of 1, 2, 4, 10 cents.at n=59A001362
- a(n) = round(sqrt( 2*Pi )^n).at n=7A001675
- a(n) = ceiling(sqrt( 2*Pi )^n).at n=7A001698
- Smallest number of stones in Tchoukaillon (or Mancala, or Kalahari) solitaire that make use of n-th hole.at n=43A002491
- Schur's 1926 partition theorem: number of partitions of n into parts 6n+1 or 6n-1.at n=54A003105
- a(n) = floor((n^2 + 6n - 3)/4).at n=46A004116
- a(n) = Sum_{k=1..n-1} (k OR n-k).at n=25A006583
- Number of triangles with integer sides and area = n times perimeter.at n=49A007237
- Coordination sequence T1 for Zeolite Code AFS.at n=19A008023
- Coordination sequence T1 for Zeolite Code BPH.at n=19A008055
- Coordination sequence for quartz.at n=14A008261
- Molien series for Weyl group E_7.at n=30A008583
- Expansion of exp(tan(x)*sinh(x)).at n=3A009251
- Coordination sequence T1 for Keatite.at n=14A009844
- Coordination sequence T2 for Zeolite Code -WEN.at n=18A009863
- Coordination sequence T1 for Zeolite Code RTE.at n=17A009890
- Coordination sequence T3 for Zeolite Code RTE.at n=17A009892