718
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1080
- Proper Divisor Sum (Aliquot Sum)
- 362
- 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
- 358
- Möbius Function
- 1
- Radical
- 718
- 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
- 51
- Smith 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
- yes
- Odd
- no
Names
- German
- siebenhundertachtzehn· ordinal: siebenhundertachtzehnste
- English
- seven hundred eighteen· ordinal: seven hundred eighteenth
- Spanish
- setecientos dieciocho· ordinal: 718º
- French
- sept cent dix-huit· ordinal: sept cent dix-huitième
- Italian
- settecentodiciotto· ordinal: 718º
- Latin
- septingenti duodeviginti· ordinal: 718.
- Portuguese
- setecentos e dezoito· ordinal: 718º
Appears in sequences
- Numbers that are not the sum of 4 tetrahedral numbers.at n=40A000797
- Number of topologies, or transitive digraphs with n unlabeled nodes.at n=6A001930
- Class numbers associated with terms of A001990.at n=15A001991
- Smallest number of stones in Tchoukaillon (or Mancala, or Kalahari) solitaire that make use of n-th hole.at n=46A002491
- Convolution of A002024 with itself.at n=29A004797
- a(n) = round(n*phi^6), where phi is the golden ratio, A001622.at n=40A004941
- a(n) = ceiling(n*phi^6), where phi is the golden ratio.at n=40A004961
- Number of restricted 3 X 3 matrices with row and column sums n.at n=21A005045
- Positions of remoteness 6 in Beans-Don't-Talk.at n=22A005694
- Expansion of (theta_2(q)/theta_3(q))^4/16 in powers of q.at n=5A005798
- Weighted count of partitions with distinct parts.at n=19A005895
- Number of factors in the infinite word formed by the Kolakoski sequence A000002.at n=31A007782
- Maximal matchings in rooted plane trees on n nodes.at n=6A007860
- Coordination sequence T2 for Zeolite Code EMT.at n=22A008087
- Coordination sequence T6 for Zeolite Code MFI.at n=17A008169
- Coordination sequence T1 for Zeolite Code NAT.at n=18A008203
- Coordination sequence T2 for Zeolite Code NAT.at n=18A008204
- Coordination sequence T1 for Zeolite Code NES.at n=17A008205
- Coordination sequence T1 for Keatite.at n=15A009844
- Coordination sequence T7 for Zeolite Code CON.at n=19A009874