3715
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4464
- Proper Divisor Sum (Aliquot Sum)
- 749
- 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
- 2968
- Möbius Function
- 1
- Radical
- 3715
- 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
- 38
- 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
- Coordination sequence T3 for Zeolite Code HEU.at n=40A008118
- Coordination sequence T3 for Zeolite Code CON.at n=43A009870
- Fibonacci sequence beginning 3, 8.at n=14A022121
- Positive numbers k such that k and 2*k are anagrams in base 9 (written in base 9).at n=14A023079
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 11.at n=33A031509
- Multiplicity of highest weight (or singular) vectors associated with character chi_58 of Monster module.at n=34A034446
- Number of partitions satisfying cn(0,5) + cn(2,5) <= 1 and cn(0,5) + cn(3,5) <= 1.at n=41A039851
- Numerators of continued fraction convergents to sqrt(319).at n=5A041602
- a(n)=(s(n)+1)/8, where s(n)=n-th base 8 palindrome that starts with 7.at n=34A043071
- Numbers whose base-7 representation contains exactly three 5's.at n=27A043415
- Numbers k such that the string 7,7 occurs in the base 9 representation of k but not of k-1.at n=45A044321
- Discriminants of imaginary quadratic fields with class number 14 (negated).at n=39A046011
- a(n) = Sum{a(k): k=0,1,2,...,n-4,n-2,n-1}; a(n-3) is not a summand; initial terms are 2,3,4.at n=13A049876
- a(n+1) = a(n)/2 if 2|a(n), a(n)/3 if 3|a(n), a(n)/5 if 5|a(n), a(n)/7 if 7|a(n), a(n)/11 if 11|a(n), a(n)/13 if 13|a(n), otherwise 17*a(n)+1.at n=32A057534
- Number of polyhexes with n cells that tile the plane isohedrally.at n=8A075214
- First occurrence of n as a term in the continued fraction for Pi/2.at n=39A076587
- Number of partitions of n in which no parts are multiples of 25.at n=28A092885
- a(n) = 2(a(n-2) - a(n-1)) + a(n-3) where a(0)=-3, a(1)=11 & a(2)=-30.at n=7A098150
- Numbers k such that (3*2^k+1)^2-2 is prime.at n=15A100912
- Numbers k such that 5*10^k - 9 is prime.at n=12A103001