7633
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 5
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 8100
- Proper Divisor Sum (Aliquot Sum)
- 467
- 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
- 7168
- Möbius Function
- 1
- Radical
- 7633
- 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
- 31
- 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
- a(n) = floor( n*(n-1)*(n-2)/23 ).at n=57A011905
- a(n) = floor( n*(n-1)*(n-2)*(n-3)/23 ).at n=22A011933
- Pseudoprimes to base 35.at n=23A020163
- Pseudoprimes to base 67.at n=46A020195
- Pseudoprimes to base 77.at n=32A020205
- Pseudoprimes to base 100.at n=41A020228
- Numbers k such that the continued fraction for sqrt(k) has period 39.at n=9A020378
- Semiprimes p1*p2 such that p2>p1 and p2 mod p1 = 7.at n=37A064905
- Number of partitions of n such that the largest part and the smallest part are relatively prime.at n=31A117087
- Positions of records in A034694.at n=38A120857
- a(n) is the number of integer lattice points inside the right triangle with legs 3n and 4n (and hypotenuse 5n).at n=35A126587
- a(n) = least k such that the remainder of 30^k divided by k is n.at n=46A128370
- Numbers of the form x^4 + 6*x^2*y^2 + y^4 (where x,y are positive integers).at n=27A135797
- a(n) = (11^n + 5^n)/2.at n=4A152429
- a(n) = A156071(n)/n.at n=4A156069
- Multiples of 17 whose reversal - 1 is also a multiple of 17.at n=26A166398
- Partial sums of A000132.at n=18A175360
- Numbers k such that 9^k - 8 is prime.at n=13A177093
- Numerators of the Inverse Akiyama-Tanigawa transform of the aerated even-indexed Bernoulli numbers 1, 0, 1/6, 0, -1/30, 0, 1/42, ...at n=9A177427
- Product of exactly two distinct primes congruent to 1 mod 8 (A007519).at n=24A185377