860
860 is a composite number, even, a calendar year.
Historical context — 860 AD
Calendar year
Year 860 (DCCCLX) was a leap year starting on Monday of the Julian calendar.
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Historical context — 860 BC
Decade
This article concerns the period 869 BC – 860 BC.
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Year facts
- Year type
-
Leap year
Divisible by 4 and not by 100; February has 29 days.
- Days in year
- 366
- ISO weeks
-
53
Long year: contains 53 ISO weeks.
- Started on
-
Thursday
January 1, 860
- Ended on
-
Friday
December 31, 860
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Decade
-
860s
860–869
- Century
-
9th century
801–900
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,166
1166 years before 2026.
In other calendars
- Hebrew
-
4620 / 4621 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
245 / 246 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Metal zodiac:Dragon
Sexagenary cycle position 17 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1403 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
238 / 239 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
852 / 853 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
782 / 781 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 14
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 10 bits
- Reversed
- 68
- Flips to (rotate 180°)
- 98
- Recamán's sequence
- a(811) = 860
- Square (n²)
- 739,600
- Cube (n³)
- 636,056,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 1,848
- φ(n) — Euler's totient
- 336
- Sum of prime factors
- 52
Primality
Prime factorization: 2 2 × 5 × 43
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- eight hundred sixty
- Ordinal
- 860th
- Roman numeral
- DCCCLX
- Binary
- 1101011100
- Octal
- 1534
- Hexadecimal
- 0x35C
- Base64
- A1w=
- One's complement
- 64,675 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ωξʹ
- Mayan (base 20)
- 𝋢·𝋣·𝋠
- Chinese
- 八百六十
- Chinese (financial)
- 捌佰陸拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 860 = 1
- e — Euler's number (e)
- Digit 860 = 0
- φ — Golden ratio (φ)
- Digit 860 = 4
- √2 — Pythagoras's (√2)
- Digit 860 = 2
- ln 2 — Natural log of 2
- Digit 860 = 1
- γ — Euler-Mascheroni (γ)
- Digit 860 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 860, here are decompositions:
- 3 + 857 = 860
- 7 + 853 = 860
- 31 + 829 = 860
- 37 + 823 = 860
- 73 + 787 = 860
- 103 + 757 = 860
- 109 + 751 = 860
- 127 + 733 = 860
Showing the first eight; more decompositions exist.
UTF-8 encoding: CD 9C (2 bytes).
Code page 860 is DOS Portuguese — DOS code page for Portuguese.
Code pages are integer identifiers used by Windows and other systems to refer to specific character encodings.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.3.92.
- Address
- 0.0.3.92
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.3.92
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 860 is an active NANP area code (North American Numbering Plan).
- Primary area
- Hartford / New London
- Region
- Connecticut
- Country
- United States
Most NANP area codes have multiple overlays in dense regions; the primary area listed is the historic/largest population center for this code.