1,966
1,966 is a composite number, even, a calendar year.
Notable events — 1966 AD
- Feb 3 The Soviet Luna 9 probe achieves the first soft landing on the Moon.
- May 16 Mao launches the Cultural Revolution in China.
- Jul 30 England wins the FIFA World Cup at Wembley, beating West Germany 4-2.
- Sep 8 Star Trek premieres on NBC.
- Oct 21 A coal-tip collapse at Aberfan, Wales, kills 116 children and 28 adults.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
Year facts
- Year type
-
Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
- Days in year
- 365
- ISO weeks
- 52
- Started on
-
Saturday
January 1, 1966
- Ended on
-
Saturday
December 31, 1966
- Friday the 13ths
-
1
One Friday the 13th this year.
- Easter Sunday
-
April 10
Sunday, April 10, 1966
- Decade
-
1960s
1960–1969
- Century
-
20th century
1901–2000
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
60
60 years before 2026.
- FIFA World Cup
-
Yes
Men's FIFA World Cup is held every four years (skipped 1942 and 1946 due to WWII).
In other calendars
- Hebrew
-
5726 / 5727 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1385 / 1386 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Fire zodiac:Horse
Sexagenary cycle position 43 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2509 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1344 / 1345 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1958 / 1959 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1888 / 1887 Saka
Indian national calendar; year starts in March.
- Japanese
-
Shōwa 41
Reign-era counting from the start of each emperor's reign.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 22
- Digit product
- 324
- Digital root
- 4
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 6,691
- Flips to (rotate 180°)
- 9,961
- Recamán's sequence
- a(3,819) = 1,966
- Square (n²)
- 3,865,156
- Cube (n³)
- 7,598,896,696
- Divisor count
- 4
- σ(n) — sum of divisors
- 2,952
- φ(n) — Euler's totient
- 982
- Sum of prime factors
- 985
Primality
Prime factorization: 2 × 983
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand nine hundred sixty-six
- Ordinal
- 1966th
- Roman numeral
- MCMLXVI
- Binary
- 11110101110
- Octal
- 3656
- Hexadecimal
- 0x7AE
- Base64
- B64=
- One's complement
- 63,569 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αϡξϛʹ
- Mayan (base 20)
- 𝋤·𝋲·𝋦
- Chinese
- 一千九百六十六
- Chinese (financial)
- 壹仟玖佰陸拾陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,966 = 2
- e — Euler's number (e)
- Digit 1,966 = 5
- φ — Golden ratio (φ)
- Digit 1,966 = 4
- √2 — Pythagoras's (√2)
- Digit 1,966 = 3
- ln 2 — Natural log of 2
- Digit 1,966 = 3
- γ — Euler-Mascheroni (γ)
- Digit 1,966 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1966, here are decompositions:
- 17 + 1949 = 1966
- 53 + 1913 = 1966
- 59 + 1907 = 1966
- 89 + 1877 = 1966
- 179 + 1787 = 1966
- 233 + 1733 = 1966
- 257 + 1709 = 1966
- 269 + 1697 = 1966
Showing the first eight; more decompositions exist.
UTF-8 encoding: DE AE (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.174.
- Address
- 0.0.7.174
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.174
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1966 first appears in π at position 2,918 of the decimal expansion (the 2,918ordinal-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.