Number

1,697

1,697 is a prime, odd, a calendar year.

Arithmetic Number Chen Prime Cousin Prime Deficient Number Happy Number Odious Number Pernicious Number Prime Pythagorean Prime Recamán's Sequence Squarefree Twin Prime Year

Notable events — 1697 AD

Sep 20 The Treaty of Ryswick ends the Nine Years' War.
Sep 11 Eugene of Savoy crushes the Ottomans at Zenta.
Mar 9 Peter the Great begins his Grand Embassy to Western Europe.

Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0

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: Tuesday
January 1, 1697
Ended on: Tuesday
December 31, 1697
Friday the 13ths: 2
2 Friday the 13ths this year.
Easter Sunday: April 7
Sunday, April 7, 1697
Decade: 1690s
1690–1699
Century: 17th century
1601–1700
Millennium: 2nd millennium
1001–2000
Years ago: 329
329 years before 2026.

In other calendars

Hebrew: 5457 / 5458 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 1108 / 1109 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Fire zodiac:Ox
Sexagenary cycle position 14 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 2240 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 1075 / 1076 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1689 / 1690 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1619 / 1618 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 4
Digit sum: 23
Digit product: 378
Digital root: 5
Palindrome: No
Bit width: 11 bits
Reversed: 7,961
Recamán's sequence: a(962) = 1,697
Square (n²): 2,879,809
Cube (n³): 4,887,035,873
Divisor count: 2
σ(n) — sum of divisors: 1,698
φ(n) — Euler's totient: 1,696

Primality

1,697 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 1697

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 1,697)

1 × 1697

First multiples

1,697 · 3,394 (double) · 5,091 · 6,788 · 8,485 · 10,182 · 11,879 · 13,576 · 15,273 · 16,970

Sums & aliquot sequence

As a sum of two squares: 4² + 41²

As consecutive integers: 848 + 849

Representations

In words: one thousand six hundred ninety-seven
Ordinal: 1697th
Roman numeral: MDCXCVII
Binary: 11010100001
Octal: 3241
Hexadecimal: 0x6A1
Base64: BqE=
One's complement: 63,838 (16-bit)

In other bases

ternary (3) 2022212

quaternary (4) 122201

quinary (5) 23242

senary (6) 11505

septenary (7) 4643

nonary (9) 2285

undecimal (11) 1303

duodecimal (12) b95

tridecimal (13) a07

tetradecimal (14) 893

pentadecimal (15) 782

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ͵αχϟζʹ
Mayan (base 20): 𝋤·𝋤·𝋱
Chinese: 一千六百九十七
Chinese (financial): 壹仟陸佰玖拾柒

In other modern scripts

Eastern Arabic ١٦٩٧ Devanagari १६९७ Bengali ১৬৯৭ Tamil ௧௬௯௭ Thai ๑๖๙๗ Tibetan ༡༦༩༧ Khmer ១៦៩៧ Lao ໑໖໙໗ Burmese ၁၆၉၇

Digit at this position in famous constants

π — Pi (π): Digit 1,697 = 1
e — Euler's number (e): Digit 1,697 = 7
φ — Golden ratio (φ): Digit 1,697 = 0
√2 — Pythagoras's (√2): Digit 1,697 = 4
ln 2 — Natural log of 2: Digit 1,697 = 5
γ — Euler-Mascheroni (γ): Digit 1,697 = 5

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 1,693 (gap of 4)
Next prime: 1,699 (gap of 2)

Pair status: twin with 1699, cousin with 1693.

Unicode codepoint

Arabic Letter Dotless Feh

U+06A1

Other letter (Lo)

UTF-8 encoding: DA A1 (2 bytes).

Lookup U+06A1 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0006A1

RGB(0, 6, 161)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.161.

Address: 0.0.6.161
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.6.161

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

Position in π

The digit sequence 1697 first appears in π at position 6,193 of the decimal expansion (the 6,193ordinal-suffix:rd digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.

Look up 1697 on Pi Search ↗