1336
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 2520
- Proper Divisor Sum (Aliquot Sum)
- 1184
- 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
- 664
- Möbius Function
- 0
- Radical
- 334
- Omega Function (Ω)
- 4
- 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
- 70
- Smith Number
- no
- Vampire 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
Appears in sequences
- a(n) = round(n*phi^7), where phi is the golden ratio, A001622.at n=46A004942
- a(n) = ceiling(n*phi^7), where phi is the golden ratio, A001622.at n=46A004962
- Number of matrix bundles of codimension n (Euler transform of A001156).at n=15A007864
- Coordination sequence T1 for Zeolite Code LAU.at n=26A008124
- 3x+1 sequence starting at 97.at n=48A008873
- 3x+1 sequence starting at 63.at n=37A008874
- 3x+1 sequence starting at 95.at n=35A008875
- 3x+1 sequence starting at 27.at n=41A008884
- Expansion of e.g.f. tan(tanh(x))*sin(x) (even powers only).at n=4A009717
- arcsinh(arcsin(arctanh(x)))=x+2/3!*x^3+32/5!*x^5+1336/7!*x^7...at n=3A012140
- a(n) is nonsquarefree and is sum of first k nonsquarefrees for some k.at n=12A013935
- Number of triples (i,j,k) with 1 <= i < j < k <= n and gcd(i,j,k) = 1.at n=21A015616
- Number of triples of different integers from [ 2,n ] with no global factor.at n=21A015618
- Number of ordered quadruples of integers from [ 1,n ] with no common factors between triples.at n=13A015635
- Numbers k such that phi(k) + 10 | sigma(k + 10).at n=33A015789
- Numbers k such that phi(k + 13) | sigma(k).at n=41A015833
- Sum of gcd(x, y) for 1 <= x, y <= n.at n=23A018806
- Define the sequence S(a(0),a(1)) by a(n+2) is the least integer such that a(n+2)/a(n+1) > a(n+1)/a(n) for n >= 0. This is S(2,10).at n=4A019475
- a(n) = 5*a(n-1) + a(n-2) - 2*a(n-3).at n=4A019476
- Numbers k such that the continued fraction for sqrt(k) has period 32.at n=16A020371