16063
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 16064
- Proper Divisor Sum (Aliquot Sum)
- 1
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 16062
- Möbius Function
- -1
- Radical
- 16063
- Omega Function (Ω)
- 1
- Little Omega Function (ω)
- 1
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
- 234
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- yes
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1868
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 74 ones.at n=14A031842
- Numerators of continued fraction convergents to sqrt(31).at n=8A041050
- Numerators of continued fraction convergents to sqrt(775).at n=6A042494
- Primes followed by a [4,2,4] prime difference pattern of A001223.at n=30A052378
- Fifth term of strong prime quintets: p(m-3)-p(m-4) > p(m-2)-p(m-3) > p(m-1)-p(m-2) > p(m)-p(m-1).at n=36A054812
- Least k for the Theodorus spiral to complete n revolutions.at n=39A072895
- Solutions to A096509[x]=6; number of prime-powers [including primes] in the neighborhood of x with Ceiling[Log[x]] radius equals 6.at n=9A096517
- Prime numbers which when written in base 7 have a composite digit-sum.at n=26A096790
- Primes occurring in exactly three prime triples (p,q,r) with p<q<r=p+6.at n=10A098423
- Let p = prime(sigma(n)) and q = prime(phi(n)), then p is in the sequence if p-q = 6.at n=20A103176
- Primes p such that (p + nextprime + p) and also (p + previousprime + p) are primes.at n=36A125146
- The upper twin prime whose lower member has a prime index.at n=37A129782
- Prime quadruples: 2nd term.at n=15A136720
- Primes congruent to 4 mod 53.at n=35A142534
- Primes congruent to 15 mod 59.at n=29A142742
- Primes congruent to 20 mod 61.at n=28A142818
- Numbers of length n binary words with fewer than 7 0-digits between any pair of consecutive 1-digits.at n=14A145115
- Number of 2-sided strip polyiamonds with n cells.at n=19A151518
- Primes p such that p + d and p - d are primes, where d is the sum of floors of square roots of the digits of p.at n=37A179634
- Cyclops emirps.at n=18A183057