604
604 is a composite number, even, a calendar year.
604 (six hundred four) is an even 3-digit number. It is a composite number with 6 divisors, and factors as 2² × 151. Written other ways, in Roman numerals it is DCIV and in binary, 1001011100.
Interestingness
Historical context — 604 AD
Calendar year
Year 604 (DCIV) was a leap year starting on Wednesday of the Julian calendar.
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Historical context — 604 BC
Calendar year
The year 604 BC was a year of the pre-Julian Roman calendar.
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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
- 52
- Started on
-
Sunday
January 1, 604
- Ended on
-
Monday
December 31, 604
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Decade
-
600s
600–609
- Century
-
7th century
601–700
- Millennium
-
1st millennium
1–1000
- Years ago
-
1,422
1422 years before 2026.
In other calendars
- Hebrew
-
4364 / 4365 AM
Rosh Hashanah falls in September/October.
- Chinese
-
Year of the zodiac:Wood zodiac:Rat
Sexagenary cycle position 1 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1147 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Ethiopian
-
596 / 597 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
526 / 525 Saka
Indian national calendar; year starts in March.
Properties
Primality
Prime factorization: 2 2 × 151
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√604 = [24; (1, 1, 2, 1, 3, 2, 1, 1, 1, 1, 1, 4, 1, 5, 3, 9, 1, 1, 15, 1, 6, 12, 6, 1, …)]
Period length 44 — the block in parentheses repeats forever.
Representations
- In words
- six hundred four
- Ordinal
- 604th
- Roman numeral
- DCIV
- Binary
- 1001011100
- Octal
- 1134
- Hexadecimal
- 0x25C
- Base64
- Alw=
- One's complement
- 64,931 (16-bit)
- Scientific notation
- 6.04 × 10²
- As a duration
- 604 s = 10 minutes, 4 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋 𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺
- Greek (Milesian)
- χδʹ
- Mayan (base 20)
- 𝋡·𝋪·𝋤
- Chinese
- 六百零四
- Chinese (financial)
- 陸佰零肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 604 = 0
- e — Euler's number (e)
- Digit 604 = 1
- φ — Golden ratio (φ)
- Digit 604 = 1
- √2 — Pythagoras's (√2)
- Digit 604 = 5
- ln 2 — Natural log of 2
- Digit 604 = 3
- γ — Euler-Mascheroni (γ)
- Digit 604 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 604, here are decompositions:
- 3 + 601 = 604
- 5 + 599 = 604
- 11 + 593 = 604
- 17 + 587 = 604
- 41 + 563 = 604
- 47 + 557 = 604
- 83 + 521 = 604
- 101 + 503 = 604
Showing the first eight; more decompositions exist.
UTF-8 encoding: C9 9C (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.92.
- Address
- 0.0.2.92
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.2.92
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The number 604 is an active NANP area code (North American Numbering Plan).
- Primary area
- Vancouver
- Region
- British Columbia
- Country
- Canada
Most NANP area codes have multiple overlays in dense regions; the primary area listed is the historic/largest population center for this code.
Heard as a frequency, 604 Hz is closest to:
- Concert pitch (A4 = 440 Hz): D5 (587.3 Hz, +48¢ — about midway to D♯5)
- Scientific pitch (C4 = 256 Hz): D♯5 (608.9 Hz, -14¢)
- Baroque pitch (A4 = 415 Hz): D♯5 (586.9 Hz, +50¢ — about midway to E5)
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.