774
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 1716
- Proper Divisor Sum (Aliquot Sum)
- 942
- 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
- 252
- Möbius Function
- 0
- Radical
- 258
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 121
- Smith Number
- no
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
- siebenhundertvierundsiebzig· ordinal: siebenhundertvierundsiebzigste
- English
- seven hundred seventy-four· ordinal: seven hundred seventy-fourth
- Spanish
- setecientos setenta y cuatro· ordinal: 774º
- French
- sept cent soixante-quatorze· ordinal: sept cent soixante-quatorzième
- Italian
- settecentosettantaquattro· ordinal: 774º
- Latin
- septingenti septuaginta quattuor· ordinal: 774.
- Portuguese
- setecentos e setenta e quatro· ordinal: 774º
Appears in sequences
- Sum of totient function: a(n) = Sum_{k=1..n} phi(k), cf. A000010.at n=50A002088
- Number of rooted trees with n vertices in which vertices at the same level have the same degree.at n=36A003238
- Numbers that are the sum of 11 positive 5th powers.at n=34A003356
- Numbers that are the sum of 12 positive 7th powers.at n=6A003379
- Numbers that are the sum of 9 nonzero 8th powers.at n=3A003387
- Pentagonal numbers written backwards.at n=18A004163
- Numbers that are the sum of at most 9 nonzero 8th powers.at n=33A004882
- Numbers that are the sum of at most 10 nonzero 8th powers.at n=36A004883
- Numbers that are the sum of at most 11 nonzero 8th powers.at n=39A004884
- Numbers that are the sum of at most 12 nonzero 8th powers.at n=42A004885
- Number of entries in first n rows of Pascal's triangle not divisible by 3.at n=64A006048
- Numbers k such that k^16 + 1 is prime.at n=34A006313
- Number of equivalence classes of 4 X n binary matrices when one can permute rows, permute columns and complement columns.at n=9A006380
- Numbers k such that sigma(x) = k has exactly 2 solutions.at n=49A007371
- Impractical numbers: even abundant numbers (A173490) that are not practical(2) (A007620).at n=42A007621
- Coordination sequence T1 for Zeolite Code AEI.at n=21A008001
- Coordination sequence T2 for Zeolite Code AEI.at n=21A008002
- Coordination sequence T1 for Zeolite Code AFT.at n=21A008026
- Coordination sequence T1 for Zeolite Code HEU.at n=18A008116
- Coordination sequence T8 for Zeolite Code MFS.at n=17A008180