7763
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
- 4
- Divisor Sum
- 8880
- Proper Divisor Sum (Aliquot Sum)
- 1117
- 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
- 6648
- Möbius Function
- 1
- Radical
- 7763
- 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
- 145
- 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 partitions into one kind of 1's, two kinds of 2's, and three kinds of 3's.at n=33A002597
- Numbers k such that 239*2^k+1 is prime.at n=21A032496
- a(n) = floor(n^3 / Pi).at n=29A032633
- Decimal part of cube root of a(n) starts with 8: first term of runs.at n=18A034134
- Numbers having four 5's in base 6.at n=18A043392
- Number of positive integers <= 2^n of form 5 x^2 + 10 y^2.at n=17A054180
- phi(n) plus the n-th prime gives a square.at n=30A116021
- Shorthand for A157035, the largest prime with 2^n digits.at n=12A157036
- Smallest m such that A070965(m) = -n.at n=31A227954
- Indices of primes in the tribonacci-like sequence, A214727.at n=10A234696
- If, for some m, A098550(m-2) is a prime p and A098550(m) = 7p, add 7p to the sequence.at n=36A253054
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 566", based on the 5-celled von Neumann neighborhood.at n=26A272989
- Number of new duplicate terms at a given iteration of the Collatz (or 3x+1) map starting with 0.at n=18A275545
- In the binary race of Pi, where the race leader changes.at n=35A278920
- Numbers k such that (412*10^k - 7)/9 is prime.at n=15A294125