1363
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
- 4
- Divisor Sum
- 1440
- Proper Divisor Sum (Aliquot Sum)
- 77
- 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
- 1288
- Möbius Function
- 1
- Radical
- 1363
- 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
- 65
- Smith Number
- no
- Vampire 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
- no
- Odd
- yes
Appears in sequences
- Number of one-sided chessboard polyominoes with n cells.at n=7A001071
- a(n) = a(n-1) + a(n-2) + 1, with a(0) = 0 and a(1) = 2.at n=14A001610
- Nearest integer to 24*(2^n - 1)/n.at n=8A003138
- a(n) = ceiling(24(2^n-1)/n).at n=8A003177
- Numbers that are the sum of 5 positive 5th powers.at n=29A003350
- a(n) = ceiling(n*phi^8), where phi is the golden ratio, A001622.at n=29A004963
- Number of weighted voting procedures.at n=8A005254
- Number of restricted circular combinations.at n=13A006499
- Minimum diameter of an integral set of n points in the plane, not all on a line.at n=47A007285
- Coordination sequence T3 for Zeolite Code HEU.at n=24A008118
- Coordination sequence T4 for Zeolite Code PAU.at n=27A008222
- Composite but smallest prime factor >= 17.at n=47A008367
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly three 1's.at n=21A013650
- Dying rabbits: a(n) = a(n-1) + a(n-2) - a(n-8).at n=17A023438
- Coordination sequence T4 for Zeolite Code IFR.at n=26A024985
- a(n) = floor(floor(S3)/floor(S1)), where S3 and S1 are, respectively, the 3rd and first elementary symmetric functions of {sqrt(k), k = 1,2,...,n}.at n=24A025200
- (d(n)-r(n))/5, where d = A026046 and r is the periodic sequence with fundamental period (1,0,4,0,0).at n=23A026048
- a(n) = (n+3)^2 - 6.at n=34A028878
- a(n) = Sum_{k divides 2^n} S(k), where S is the Kempner function A002034.at n=49A029715
- Coordination sequence T3 for Zeolite Code SBS.at n=29A033610