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5,666

5,666 is a composite number, even.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).
Deficient Number Happy Number Odious Number Pernicious Number Recamán's Sequence Semiprime Squarefree

Properties

Parity
Even
Digit count
4
Digit sum
23
Digit product
1,080
Digital root
5
Palindrome
No
Bit width
13 bits
Reversed
6,665
Recamán's sequence
a(3,580) = 5,666
Square (n²)
32,103,556
Cube (n³)
181,898,748,296
Divisor count
4
σ(n) — sum of divisors
8,502
φ(n) — Euler's totient
2,832
Sum of prime factors
2,835

Primality

Prime factorization: 2 × 2833

Nearest primes: 5,659 (−7) · 5,669 (+3)

Divisors & multiples

All divisors (4)
1 · 2 · 2833 (half) · 5666
Aliquot sum (sum of proper divisors): 2,836
Factor pairs (a × b = 5,666)
1 × 5666
2 × 2833
First multiples
5,666 · 11,332 (double) · 16,998 · 22,664 · 28,330 · 33,996 · 39,662 · 45,328 · 50,994 · 56,660

Sums & aliquot sequence

As a sum of two squares: 25² + 71²
As consecutive integers: 1,415 + 1,416 + 1,417 + 1,418
Aliquot sequence: 5,666 2,836 2,134 1,394 874 566 286 218 112 136 134 70 74 40 50 43 1 — unresolved within range

Representations

In words
five thousand six hundred sixty-six
Ordinal
5666th
Binary
1011000100010
Octal
13042
Hexadecimal
0x1622
Base64
FiI=
One's complement
59,869 (16-bit)
In other bases
ternary (3) 21202212
quaternary (4) 1120202
quinary (5) 140131
senary (6) 42122
septenary (7) 22343
nonary (9) 7685
undecimal (11) 4291
duodecimal (12) 3342
tridecimal (13) 276b
tetradecimal (14) 20ca
pentadecimal (15) 1a2b

Historical numeral systems

Babylonian (base 60)
𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵εχξϛʹ
Mayan (base 20)
𝋮·𝋣·𝋦
Chinese
五千六百六十六
Chinese (financial)
伍仟陸佰陸拾陸
In other modern scripts
Eastern Arabic ٥٦٦٦ Devanagari ५६६६ Bengali ৫৬৬৬ Tamil ௫௬௬௬ Thai ๕๖๖๖ Tibetan ༥༦༦༦ Khmer ៥៦៦៦ Lao ໕໖໖໖ Burmese ၅၆၆၆

Digit at this position in famous constants

π — Pi (π)
Digit 5,666 = 7
e — Euler's number (e)
Digit 5,666 = 4
φ — Golden ratio (φ)
Digit 5,666 = 6
√2 — Pythagoras's (√2)
Digit 5,666 = 9
ln 2 — Natural log of 2
Digit 5,666 = 5
γ — Euler-Mascheroni (γ)
Digit 5,666 = 2

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 5666, here are decompositions:

  • 7 + 5659 = 5666
  • 13 + 5653 = 5666
  • 19 + 5647 = 5666
  • 43 + 5623 = 5666
  • 97 + 5569 = 5666
  • 103 + 5563 = 5666
  • 109 + 5557 = 5666
  • 139 + 5527 = 5666

Showing the first eight; more decompositions exist.

Unicode codepoint
Canadian Syllabics Carrier Lu
U+1622
Other letter (Lo)

UTF-8 encoding: E1 98 A2 (3 bytes).

Hex color
#001622
RGB(0, 22, 34)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.22.34.

Address
0.0.22.34
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.22.34

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 5666 first appears in π at position 13,593 of the decimal expansion (the 13,593ordinal-suffix:rd digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.