Number

465

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

Arithmetic Number Deficient Number Harshad / Niven Odious Number Padovan Number Pernicious Number Recamán's Sequence Sphenic Number Squarefree Triangular Year

Historical context — 465 AD

Calendar year

Year 465 (CDLXV) was a common year starting on Friday of the Julian calendar.

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Historical context — 465 BC

Calendar year

Year 465 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, 465
Ended on: Thursday
December 31, 465
Friday the 13ths: 3
3 Friday the 13ths this year.
Decade: 460s
460–469
Century: 5th century
401–500
Millennium: 1st millennium
1–1000
Years ago: 1,561
1561 years before 2026.

In other calendars

Hebrew: 4225 / 4226 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Wood zodiac:Snake
Sexagenary cycle position 42 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1008 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 457 / 458 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 387 / 386 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 15
Digit product: 120
Digital root: 6
Palindrome: No
Bit width: 9 bits
Reversed: 564
Recamán's sequence: a(438) = 465
Square (n²): 216,225
Cube (n³): 100,544,625
Divisor count: 8
σ(n) — sum of divisors: 768
φ(n) — Euler's totient: 240
Sum of prime factors: 39

Primality

Prime factorization: 3 × 5 × 31

Nearest primes: 463 (−2) · 467 (+2)

Divisors & multiples

All divisors (8)

1 · 3 · 5 · 15 · 31 · 93 · 155 · 465

Aliquot sum (sum of proper divisors): 303

Factor pairs (a × b = 465)

1 × 465

3 × 155

5 × 93

15 × 31

First multiples

465 · 930 (double) · 1,395 · 1,860 · 2,325 · 2,790 · 3,255 · 3,720 · 4,185 · 4,650

Sums & aliquot sequence

As consecutive integers: 232 + 233 154 + 155 + 156 91 + 92 + 93 + 94 + 95 75 + 76 + 77 + 78 + 79 + 80

Aliquot sequence: 465 → 303 → 105 → 87 → 33 → 15 → 9 → 4 → 3 → 1 → 0 — terminates at zero

Representations

In words: four hundred sixty-five
Ordinal: 465th
Roman numeral: CDLXV
Binary: 111010001
Octal: 721
Hexadecimal: 0x1D1
Base64: AdE=
One's complement: 65,070 (16-bit)

In other bases

ternary (3) 122020

quaternary (4) 13101

quinary (5) 3330

senary (6) 2053

septenary (7) 1233

nonary (9) 566

undecimal (11) 393

duodecimal (12) 329

tridecimal (13) 29a

tetradecimal (14) 253

pentadecimal (15) 210

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): υξεʹ
Mayan (base 20): 𝋡·𝋣·𝋥
Chinese: 四百六十五
Chinese (financial): 肆佰陸拾伍

In other modern scripts

Eastern Arabic ٤٦٥ Devanagari ४६५ Bengali ৪৬৫ Tamil ௪௬௫ Thai ๔๖๕ Tibetan ༤༦༥ Khmer ៤៦៥ Lao ໔໖໕ Burmese ၄၆၅

Digit at this position in famous constants

π — Pi (π): Digit 465 = 4
e — Euler's number (e): Digit 465 = 6
φ — Golden ratio (φ): Digit 465 = 4
√2 — Pythagoras's (√2): Digit 465 = 7
ln 2 — Natural log of 2: Digit 465 = 6
γ — Euler-Mascheroni (γ): Digit 465 = 8

Also seen as

Unicode codepoint

Latin Capital Letter O With Caron

U+01D1

Uppercase letter (Lu)

UTF-8 encoding: C7 91 (2 bytes).

Lookup U+01D1 on Compart ↗ Lookup on FileFormat.Info ↗

Network port

TCP/UDP port 465 is the well-known port for SMTPS — SMTP over TLS.

Hex color

#0001D1

RGB(0, 1, 209)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.209.

Address: 0.0.1.209
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.1.209

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