Number

697

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

697 (six hundred ninety-seven) is an odd 3-digit number. It is a composite number with 4 divisors, and factors as 17 × 41. Written other ways, in Roman numerals it is DCXCVII and in binary, 1010111001.

Arithmetic Number Cake Number Cube-Free Deficient Number Evil Number Heptagonal Recamán's Sequence Semiprime Squarefree Year

Interestingness

★ ★ ★ ★ ☆

7 notable facts · grade B

685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709

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Historical context — 697 AD

Calendar year

Year 697 (DCXCVII) was a common year starting on Monday of the Julian calendar.

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

Historical context — 697 BC

Decade

This article concerns the period 699 BC – 690 BC.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 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: 52
Started on: Friday
January 1, 697
Ended on: Friday
December 31, 697
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 690s
690–699
Century: 7th century
601–700
Millennium: 1st millennium
1–1000
Years ago: 1,329
1329 years before 2026.

In other calendars

Hebrew: 4457 / 4458 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 77 / 78 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Fire zodiac:Rooster
Sexagenary cycle position 34 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1240 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 75 / 76 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 689 / 690 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 619 / 618 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 22
Digit product: 378
Digital root: 4
Palindrome: No
Bit width: 10 bits
Reversed: 796
Recamán's sequence: a(2,230) = 697
Square (n²): 485,809
Cube (n³): 338,608,873
Divisor count: 4
σ(n) — sum of divisors: 756
φ(n) — Euler's totient: 640
Sum of prime factors: 58

Primality

Prime factorization: 17 × 41

Nearest primes: 691 (−6) · 701 (+4)

Divisors & multiples

All divisors (4)

1 · 17 · 41 · 697

Aliquot sum (sum of proper divisors): 59

Factor pairs (a × b = 697)

1 × 697

17 × 41

First multiples

697 · 1,394 (double) · 2,091 · 2,788 · 3,485 · 4,182 · 4,879 · 5,576 · 6,273 · 6,970

Sums & aliquot sequence

As a sum of two squares: 11² + 24² = 16² + 21²

As consecutive integers: 348 + 349 33 + 34 + … + 49 4 + 5 + … + 37

Aliquot sequence: 697 → 59 → 1 → 0 — terminates at zero

Continued fraction of √n

√697 = [26; (2, 2, 52)]

Period length 3 — the block in parentheses repeats forever.

Representations

In words: six hundred ninety-seven
Ordinal: 697th
Roman numeral: DCXCVII
Binary: 1010111001
Octal: 1271
Hexadecimal: 0x2B9
Base64: Ark=
One's complement: 64,838 (16-bit)
Scientific notation: 6.97 × 10²
As a duration: 697 s = 11 minutes, 37 seconds

In other bases

ternary (3) 221211

quaternary (4) 22321

quinary (5) 10242

senary (6) 3121

septenary (7) 2014

nonary (9) 854

undecimal (11) 584

duodecimal (12) 4a1

tridecimal (13) 418

tetradecimal (14) 37b

pentadecimal (15) 317

As an angle

697° = 1 × 360° + 337°

337° ≈ 5.882 rad

Compass bearing: NNW (north-northwest)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): χϟζʹ
Mayan (base 20): 𝋡·𝋮·𝋱
Chinese: 六百九十七
Chinese (financial): 陸佰玖拾柒

In other modern scripts

Eastern Arabic ٦٩٧ Devanagari ६९७ Bengali ৬৯৭ Tamil ௬௯௭ Thai ๖๙๗ Tibetan ༦༩༧ Khmer ៦៩៧ Lao ໖໙໗ Burmese ၆၉၇

Digit at this position in famous constants

π — Pi (π): Digit 697 = 8
e — Euler's number (e): Digit 697 = 1
φ — Golden ratio (φ): Digit 697 = 8
√2 — Pythagoras's (√2): Digit 697 = 8
ln 2 — Natural log of 2: Digit 697 = 7
γ — Euler-Mascheroni (γ): Digit 697 = 6

Also seen as

Unicode codepoint

Modifier Letter Prime

U+02B9

Modifier letter (Lm)

UTF-8 encoding: CA B9 (2 bytes).

Lookup U+02B9 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0002B9

RGB(0, 2, 185)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.185.

Address: 0.0.2.185
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.2.185

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

Musical pitch

Heard as a frequency, 697 Hz is closest to:

Concert pitch (A4 = 440 Hz): F5 (698.5 Hz, -4¢)
Scientific pitch (C4 = 256 Hz): F5 (683.4 Hz, +34¢)
Baroque pitch (A4 = 415 Hz): F♯5 (697.9 Hz, -2¢)