3667
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
- 4
- Divisor Sum
- 3880
- Proper Divisor Sum (Aliquot Sum)
- 213
- 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
- 3456
- Möbius Function
- 1
- Radical
- 3667
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 43
- 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 n-node trees of height at most 4.at n=13A001384
- Inverse binomial transform of primes.at n=15A007442
- Coordination sequence T2 for Zeolite Code MEI.at n=44A008147
- Expansion of 1/((1-7x)(1-12x)).at n=3A016184
- Pseudoprimes to base 84.at n=14A020212
- Metadromes: digits in base 7 are in strict ascending order.at n=61A023776
- Numbers whose square has its digits in nondecreasing order.at n=39A028819
- Numbers k such that k divides the (left) concatenation of all numbers <= k written in base 15 (most significant digit on right and removing all least significant zeros before concatenation).at n=9A029532
- 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 59.at n=19A031557
- Numerators of continued fraction convergents to sqrt(161).at n=7A041296
- Coefficients of a polynomial used in calculation of A055913.at n=32A055916
- Surround numbers of an n X 2 rectangle when n is odd.at n=4A061525
- a(1) = 1; sequence of digits of a(n)^2 is a subsequence of the sequence of digits of a(n+1)^2.at n=6A067633
- a(n) = (a(n-1)+a(n-2))/7^k, where 7^k is the highest power of 7 dividing a(n-1)+a(n-2).at n=49A078414
- Number of divisors associated with the cyclic cases within the n-th group of least prime signatures.at n=12A079274
- a(n) = least odd number such that all pairwise sums a(i) + a(j), i < j <= n, are distinct.at n=35A080430
- Numbers n such that 29^n + 2 is prime.at n=9A087886
- a(n) = A052217(n)/3.at n=26A088405
- Duplicate of A067633.at n=6A091874
- Sums of 10 distinct positive pentatope numbers (A000332).at n=37A104400