Number

604

604 is a composite number, even, a calendar year.

Deficient Number Odious Number Pernicious Number Recamán's Sequence Year

Historical context — 604 AD

Calendar year

Year 604 (DCIV) was a leap year starting on Wednesday of the Julian calendar.

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

Historical context — 604 BC

Calendar year

The year 604 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: 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

Parity: Even
Digit count: 3
Digit sum: 10
Digit product: 0
Digital root: 1
Palindrome: No
Bit width: 10 bits
Reversed: 406
Recamán's sequence: a(1,051) = 604
Square (n²): 364,816
Cube (n³): 220,348,864
Divisor count: 6
σ(n) — sum of divisors: 1,064
φ(n) — Euler's totient: 300
Sum of prime factors: 155

Primality

Prime factorization: 2 ² × 151

Nearest primes: 601 (−3) · 607 (+3)

Divisors & multiples

All divisors (6)

1 · 2 · 4 · 151 · 302 (half) · 604

Aliquot sum (sum of proper divisors): 460

Factor pairs (a × b = 604)

1 × 604

2 × 302

4 × 151

First multiples

604 · 1,208 (double) · 1,812 · 2,416 · 3,020 · 3,624 · 4,228 · 4,832 · 5,436 · 6,040

Sums & aliquot sequence

As consecutive integers: 72 + 73 + … + 79

Aliquot sequence: 604 → 460 → 548 → 418 → 302 → 154 → 134 → 70 → 74 → 40 → 50 → 43 → 1 → 0 — terminates at zero

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)

In other bases

ternary (3) 211101

quaternary (4) 21130

quinary (5) 4404

senary (6) 2444

septenary (7) 1522

nonary (9) 741

undecimal (11) 4aa

duodecimal (12) 424

tridecimal (13) 376

tetradecimal (14) 312

pentadecimal (15) 2a4

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

In other modern scripts

Eastern Arabic ٦٠٤ Devanagari ६०४ Bengali ৬০৪ Tamil ௬௦௪ Thai ๖๐๔ Tibetan ༦༠༤ Khmer ៦០៤ Lao ໖໐໔ Burmese ၆၀၄

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 decomposition

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.

Unicode codepoint

Latin Small Letter Reversed Open E

U+025C

Lowercase letter (Ll)

UTF-8 encoding: C9 9C (2 bytes).

Lookup U+025C on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#00025C

RGB(0, 2, 92)

IPv4 address

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.

NANP area code 604

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.

Look up area code 604 ↗