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Number

207

207 is a composite number, odd, a calendar year.

Arithmetic Number Deficient Number Evil Number Harshad / Niven Recamán's Sequence Year

Historical context — 207 AD

Calendar year

Year 207 (CCVII) was a common year starting on Thursday of the Julian calendar.

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Historical context — 207 BC

Calendar year

Year 207 BC was a year of the pre-Julian Roman calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback Read the full article on Wikipedia →

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
53
Long year: contains 53 ISO weeks.
Started on
Thursday
January 1, 207
Ended on
Thursday
December 31, 207
Friday the 13ths
3
3 Friday the 13ths this year.
Decade
200s
200–209
Century
3rd century
201–300
Millennium
1st millennium
1–1000
Years ago
1,819
1819 years before 2026.

In other calendars

Hebrew
3967 / 3968 AM
Rosh Hashanah falls in September/October.
Chinese
Year of the zodiac:Fire zodiac:Pig
Sexagenary cycle position 24 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era
750 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian
199 / 200 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka)
129 / 128 Saka
Indian national calendar; year starts in March.

Properties

Parity
Odd
Digit count
3
Digit sum
9
Digit product
0
Digital root
9
Palindrome
No
Bit width
8 bits
Reversed
702
Recamán's sequence
a(2,618) = 207
Square (n²)
42,849
Cube (n³)
8,869,743
Divisor count
6
σ(n) — sum of divisors
312
φ(n) — Euler's totient
132
Sum of prime factors
29

Primality

Prime factorization: 3 2 × 23

Nearest primes: 199 (−8) · 211 (+4)

Divisors & multiples

All divisors (6)
1 · 3 · 9 · 23 · 69 · 207
Aliquot sum (sum of proper divisors): 105
Factor pairs (a × b = 207)
1 × 207
3 × 69
9 × 23
First multiples
207 · 414 (double) · 621 · 828 · 1,035 · 1,242 · 1,449 · 1,656 · 1,863 · 2,070

Sums & aliquot sequence

As consecutive integers: 103 + 104 68 + 69 + 70 32 + 33 + 34 + 35 + 36 + 37 19 + 20 + … + 27
Aliquot sequence: 207 105 87 33 15 9 4 3 1 0 — terminates at zero

Representations

In words
two hundred seven
Ordinal
207th
Roman numeral
CCVII
Binary
11001111
Octal
317
Hexadecimal
0xCF
Base64
zw==
One's complement
48 (8-bit)
In other bases
ternary (3) 21200
quaternary (4) 3033
quinary (5) 1312
senary (6) 543
septenary (7) 414
nonary (9) 250
undecimal (11) 179
duodecimal (12) 153
tridecimal (13) 12c
tetradecimal (14) 10b
pentadecimal (15) dc

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
σζʹ
Mayan (base 20)
𝋪·𝋧
Chinese
二百零七
Chinese (financial)
貳佰零柒
In other modern scripts
Eastern Arabic ٢٠٧ Devanagari २०७ Bengali ২০৭ Tamil ௨௦௭ Thai ๒๐๗ Tibetan ༢༠༧ Khmer ២០៧ Lao ໒໐໗ Burmese ၂၀၇

Digit at this position in famous constants

π — Pi (π)
Digit 207 = 1
e — Euler's number (e)
Digit 207 = 3
φ — Golden ratio (φ)
Digit 207 = 0
√2 — Pythagoras's (√2)
Digit 207 = 5
ln 2 — Natural log of 2
Digit 207 = 6
γ — Euler-Mascheroni (γ)
Digit 207 = 3

Also seen as

Unicode codepoint
Ï
Latin Capital Letter I With Diaeresis
U+00CF
Uppercase letter (Lu)

UTF-8 encoding: C3 8F (2 bytes).

Hex color
#0000CF
RGB(0, 0, 207)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.207.

Address
0.0.0.207
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.0.207

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

NANP area code 207

The number 207 is an active NANP area code (North American Numbering Plan).

Primary area
Statewide
Region
Maine
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.