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10,666

10,666 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 Flippable Happy Number Odious Number Pernicious Number Recamán's Sequence Semiprime Squarefree

Properties

Parity
Even
Digit count
5
Digit sum
19
Digit product
0
Digital root
1
Palindrome
No
Bit width
14 bits
Reversed
66,601
Flips to (rotate 180°)
99,901
Recamán's sequence
a(50,187) = 10,666
Square (n²)
113,763,556
Cube (n³)
1,213,402,088,296
Divisor count
4
σ(n) — sum of divisors
16,002
φ(n) — Euler's totient
5,332
Sum of prime factors
5,335

Primality

Prime factorization: 2 × 5333

Nearest primes: 10,663 (−3) · 10,667 (+1)

Divisors & multiples

All divisors (4)
1 · 2 · 5333 (half) · 10666
Aliquot sum (sum of proper divisors): 5,336
Factor pairs (a × b = 10,666)
1 × 10666
2 × 5333
First multiples
10,666 · 21,332 (double) · 31,998 · 42,664 · 53,330 · 63,996 · 74,662 · 85,328 · 95,994 · 106,660

Sums & aliquot sequence

As a sum of two squares: 71² + 75²
As consecutive integers: 2,665 + 2,666 + 2,667 + 2,668
Aliquot sequence: 10,666 5,336 5,464 4,796 4,444 4,124 3,100 3,844 3,107 253 35 13 1 0 — terminates at zero

Representations

In words
ten thousand six hundred sixty-six
Ordinal
10666th
Binary
10100110101010
Octal
24652
Hexadecimal
0x29AA
Base64
Kao=
One's complement
54,869 (16-bit)
In other bases
ternary (3) 112122001
quaternary (4) 2212222
quinary (5) 320131
senary (6) 121214
septenary (7) 43045
nonary (9) 15561
undecimal (11) 8017
duodecimal (12) 620a
tridecimal (13) 4b16
tetradecimal (14) 3c5c
pentadecimal (15) 3261

Historical numeral systems

Babylonian (base 60)
𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵ιχξϛʹ
Mayan (base 20)
𝋡·𝋦·𝋭·𝋦
Chinese
一萬零六百六十六
Chinese (financial)
壹萬零陸佰陸拾陸
In other modern scripts
Eastern Arabic ١٠٦٦٦ Devanagari १०६६६ Bengali ১০৬৬৬ Tamil ௧௦௬௬௬ Thai ๑๐๖๖๖ Tibetan ༡༠༦༦༦ Khmer ១០៦៦៦ Lao ໑໐໖໖໖ Burmese ၁၀၆၆၆

Digit at this position in famous constants

π — Pi (π)
Digit 10,666 = 4
e — Euler's number (e)
Digit 10,666 = 4
φ — Golden ratio (φ)
Digit 10,666 = 2
√2 — Pythagoras's (√2)
Digit 10,666 = 3
ln 2 — Natural log of 2
Digit 10,666 = 6
γ — Euler-Mascheroni (γ)
Digit 10,666 = 1

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 10666, here are decompositions:

  • 3 + 10663 = 10666
  • 53 + 10613 = 10666
  • 59 + 10607 = 10666
  • 107 + 10559 = 10666
  • 137 + 10529 = 10666
  • 167 + 10499 = 10666
  • 179 + 10487 = 10666
  • 233 + 10433 = 10666

Showing the first eight; more decompositions exist.

Unicode codepoint
Measured Angle With Open Arm Ending In Arrow Pointing Down And Right
U+29AA
Math symbol (Sm)

UTF-8 encoding: E2 A6 AA (3 bytes).

Hex color
#0029AA
RGB(0, 41, 170)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.41.170.

Address
0.0.41.170
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.41.170

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

Position in π

The digit sequence 10666 first appears in π at position 38,130 of the decimal expansion (the 38,130ordinal-suffix:th 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.