6962
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 10623
- Proper Divisor Sum (Aliquot Sum)
- 3661
- 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
- 3422
- Möbius Function
- 0
- Radical
- 118
- 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
- 57
- 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
- 7th-order maximal independent sets in cycle graph.at n=58A007389
- Numbers m such that phi(m) * sigma(m) + k^2 is not a square for any k.at n=29A015713
- Numbers n such that tau(sigma(n))= tau(tau(n)).at n=26A015730
- Number of partitions of n into 7 unordered relatively prime parts.at n=41A023027
- [ (4th elementary symmetric function of S(n))/(first elementary symmetric function of S(n)) ], where S(n) = {first n+3 positive integers congruent to 1 mod 4}.at n=3A024387
- 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 82.at n=18A031580
- Numbers m such that m^2 ends in 444.at n=27A039685
- Numbers m such that the factorizations of m..m+3 have the same number of primes (including multiplicities).at n=31A045940
- Numbers that are not squarefree and whose Euler totient function is squarefree.at n=20A049198
- Numbers n such that n^3 is the sum of two nonzero squares in exactly one way.at n=35A050804
- Let Py(n)=A000330(n)=n-th square pyramidal number. Consider all integer triples (i,j,k), j >= k>0, with Py(i)=Py(j)+Py(k), ordered by increasing i; sequence gives k values.at n=44A053721
- Numbers k such that sigma(k)*phi(k) is squarefree.at n=13A065299
- Numbers that when multiplied by the product of their nonzero digits produce a square.at n=50A066565
- Sum of the first n Sophie Germain primes.at n=28A066819
- If D[n] is divisor-set of n, then in set of 1+D only 2 primes occur:{2,3}; also n is not squarefree.at n=21A072607
- Numbers n such that n and n+2 are of the form p^2*q where p and q are distinct primes.at n=25A074173
- Maximum number of regions into which the plane can be divided using n (concave) quadrilaterals.at n=30A077591
- a(n) = 2*prime(n)^2.at n=16A079704
- Twice a square but not the sum of 2 distinct squares.at n=36A081324
- Numbers k such that numerator of Bernoulli(2k) is divisible by the square of 59, the second irregular prime.at n=9A093058