860
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 1848
- Proper Divisor Sum (Aliquot Sum)
- 988
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 336
- Möbius Function
- 0
- Radical
- 430
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 3
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
- 103
- Smith 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
Names
- German
- achthundertsechzig· ordinal: achthundertsechzigste
- English
- eight hundred sixty· ordinal: eight hundred sixtieth
- Spanish
- ochocientos sesenta· ordinal: 860º
- French
- huit cent soixante· ordinal: huit cent soixantième
- Italian
- ottocentosessanta· ordinal: 860º
- Latin
- octingenti sexaginta· ordinal: 860.
- Portuguese
- oitocentos e sessenta· ordinal: 860º
Appears in sequences
- a(n) = n*(n+3)/2.at n=40A000096
- Numbers in which every digit contains at least one loop (version 1).at n=36A001743
- Numbers that are the sum of 10 positive 5th powers.at n=34A003355
- Numbers that are the sum of 6 positive 6th powers.at n=9A003362
- Numbers that are the sum of at most 6 nonzero 6th powers.at n=42A004857
- a(n) = floor(n*phi^10), where phi is the golden ratio, A001622.at n=7A004925
- Numbers k such that phi(x) = k has exactly 3 solutions.at n=34A007367
- Moebius transform of triangular numbers.at n=40A007438
- a(n) = phi(n) * (sigma(n) - n).at n=49A007517
- Coordination sequence T4 for Zeolite Code FER.at n=18A008109
- Coordination sequence T1 for Zeolite Code STI.at n=20A008234
- Coordination sequence T3 for Zeolite Code TON.at n=18A008243
- Theta series of A_4 lattice.at n=49A008444
- Multiples of 20.at n=43A008602
- Number of partitions of n into at most 7 parts.at n=25A008636
- Coordination sequence T2 for Zeolite Code RSN.at n=19A009886
- Coordination sequence T2 for Zeolite Code RTE.at n=20A009891
- a(n) = n*(2*n + 3).at n=20A014106
- a(n) = prime(n)*(prime(n-1)-1)/2.at n=11A014302
- Largest convex area that can be tiled with n equilateral triangles whose sides s_k are relatively prime, i.e., gcd(s_1,...,s_n) = 1.at n=11A014529