3775
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 22
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 4712
- Proper Divisor Sum (Aliquot Sum)
- 937
- 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
- 3000
- Möbius Function
- 0
- Radical
- 755
- Omega Function (Ω)
- 3
- 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
- 87
- 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
- no
- Odd
- yes
Appears in sequences
- Numbers that are the sum of 9 positive 6th powers.at n=42A003365
- Coordination sequence T6 for Zeolite Code MFI.at n=39A008169
- If x and y are terms, so is x*y + 9.at n=24A009350
- A015938(n)-2^n.at n=38A015939
- a(n) = least m such that if r and s in {1/2, 1/5, 1/8, ..., 1/(3n-1)} satisfy r < s, then r < k/m < (k+1)/m < s for some integer k.at n=27A024837
- Composite numbers whose prime factors contain no digits other than 1 and 5.at n=13A036305
- Sums of 10 distinct powers of 2.at n=31A038461
- Sums of 3 distinct powers of 5.at n=18A038475
- Numerators of continued fraction convergents to sqrt(29).at n=8A041046
- Numbers having three 7's in base 8.at n=9A043451
- Numbers whose base-4 representation contains no 1's and exactly four 3's.at n=29A045113
- Numbers whose base-4 representation contains exactly two 2's and four 3's.at n=5A045147
- Numbers whose base-5 representation contains exactly three 0's and three 1's.at n=8A045172
- Odd numbers with only palindromic prime factors whose sum is palindromic (counted with multiplicity).at n=17A046356
- Numbers of the form p*q*r where p,q,r are (not necessarily distinct) odd palindromic primes (odd terms from A002385).at n=41A046373
- Second pentagonal numbers with even index: a(n) = n*(6*n+1).at n=25A049453
- Coefficient triangle of polynomials (rising powers) related to Fibonacci convolutions. Companion triangle to A057995.at n=13A057280
- Coefficient triangle of polynomials (falling powers) related to Fibonacci convolutions. Companion triangle to A057281.at n=11A057282
- Numbers n such that n | 5^n + 4^n + 1.at n=19A057302
- Numbers k such that 2^k - 7 is prime.at n=5A059609