662
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 996
- Proper Divisor Sum (Aliquot Sum)
- 334
- 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
- 330
- Möbius Function
- 1
- Radical
- 662
- 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
- 25
- 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
- sechshundertzweiundsechzig· ordinal: sechshundertzweiundsechzigste
- English
- six hundred sixty-two· ordinal: six hundred sixty-second
- Spanish
- seiscientos sesenta y dos· ordinal: 662º
- French
- six cent soixante-deux· ordinal: six cent soixante-deuxième
- Italian
- seicentosessantadue· ordinal: 662º
- Latin
- sescenti sexaginta duo· ordinal: 662.
- Portuguese
- seiscentos e sessenta e dois· ordinal: 662º
Appears in sequences
- Numbers that are not the sum of 4 tetrahedral numbers.at n=36A000797
- Second-order Euler numbers.at n=5A002435
- Numbers k such that (k^2 + k + 1)/7 is prime.at n=55A002641
- a(n) = Sum_{d|n, d <= 4} d^2 + 4*Sum_{d|n, d>4} d.at n=59A002791
- Number of commutative elements in Coxeter group E_n.at n=3A003822
- Number of self-dual signed graphs with n nodes. Also number of self-complementary 2-multigraphs on n nodes.at n=6A004104
- Mian-Chowla sequence (a B_2 sequence): a(1) = 1; for n>1, a(n) = smallest number > a(n-1) such that the pairwise sums of elements are all distinct.at n=22A005282
- Number of Twopins positions.at n=15A005690
- A grasshopper sequence: closed under n -> 2n+2 and 6n+6.at n=42A007319
- Coordination sequence T4 for Zeolite Code HEU.at n=17A008119
- Coordination sequence T2 for Zeolite Code LEV.at n=19A008128
- Coordination sequence T1 for Zeolite Code ATO.at n=17A008265
- Triangle of coefficients in expansion of D^n (sec x) / sec x in powers of tan x.at n=13A008294
- Coordination sequence T1 for Zeolite Code -PAR.at n=18A009855
- Coordination sequence T2 for Zeolite Code CON.at n=18A009869
- Coordination sequence T2 for Zeolite Code ZON.at n=18A009920
- a(n) = Sum_{j=1..n} j*prime(j).at n=8A014285
- Numbers k such that phi(k + 12) | sigma(k) + 12.at n=52A015875
- Eleven iterations of Reverse and Add are needed to reach a palindrome.at n=5A015992
- Coordination sequence T3 for Zeolite Code TER.at n=17A016435