1,698
1,698 is a composite number, even, a calendar year.
Notable events — 1698 AD
- Sep 5 Peter the Great imposes a beard tax on Russian nobles.
- Aug 27 The Scots launch the Darien scheme to colonize Panama.
- Dec 25 Thomas Savery patents an early steam pump.
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
-
Wednesday
January 1, 1698
- Ended on
-
Wednesday
December 31, 1698
- Friday the 13ths
-
1
One Friday the 13th this year.
- Easter Sunday
-
March 30
Sunday, March 30, 1698
- Decade
-
1690s
1690–1699
- Century
-
17th century
1601–1700
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
328
328 years before 2026.
In other calendars
- Hebrew
-
5458 / 5459 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1109 / 1110 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Earth zodiac:Tiger
Sexagenary cycle position 15 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2241 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1076 / 1077 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1690 / 1691 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1620 / 1619 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 24
- Digit product
- 432
- Digital root
- 6
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 8,961
- Flips to (rotate 180°)
- 8,691
- Recamán's sequence
- a(964) = 1,698
- Square (n²)
- 2,883,204
- Cube (n³)
- 4,895,680,392
- Divisor count
- 8
- σ(n) — sum of divisors
- 3,408
- φ(n) — Euler's totient
- 564
- Sum of prime factors
- 288
Primality
Prime factorization: 2 × 3 × 283
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand six hundred ninety-eight
- Ordinal
- 1698th
- Roman numeral
- MDCXCVIII
- Binary
- 11010100010
- Octal
- 3242
- Hexadecimal
- 0x6A2
- Base64
- BqI=
- One's complement
- 63,837 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵αχϟηʹ
- Mayan (base 20)
- 𝋤·𝋤·𝋲
- Chinese
- 一千六百九十八
- Chinese (financial)
- 壹仟陸佰玖拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,698 = 4
- e — Euler's number (e)
- Digit 1,698 = 3
- φ — Golden ratio (φ)
- Digit 1,698 = 7
- √2 — Pythagoras's (√2)
- Digit 1,698 = 7
- ln 2 — Natural log of 2
- Digit 1,698 = 8
- γ — Euler-Mascheroni (γ)
- Digit 1,698 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1698, here are decompositions:
- 5 + 1693 = 1698
- 29 + 1669 = 1698
- 31 + 1667 = 1698
- 41 + 1657 = 1698
- 61 + 1637 = 1698
- 71 + 1627 = 1698
- 79 + 1619 = 1698
- 89 + 1609 = 1698
Showing the first eight; more decompositions exist.
UTF-8 encoding: DA A2 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.162.
- Address
- 0.0.6.162
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.6.162
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.
The digit sequence 1698 first appears in π at position 25,318 of the decimal expansion (the 25,318ordinal-suffix:th 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.