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1,026,661

1,026,661 is a prime, odd.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).

1,026,661 (one million twenty-six thousand six hundred sixty-one) is an odd 7-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0xFAA65.

Arithmetic Number Cube-Free Deficient Number Emirp Evil Number Prime Pythagorean Prime Sexy Prime Squarefree

Interestingness

Properties

Parity
Odd
Digit count
7
Digit sum
22
Digit product
0
Digital root
4
Palindrome
No
Bit width
20 bits
Reversed
1,666,201
Square (n²)
1,054,032,808,921
Cube (n³)
1,082,134,377,639,642,781
Divisor count
2
σ(n) — sum of divisors
1,026,662
φ(n) — Euler's totient
1,026,660

Primality

1,026,661 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 1026661
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 1,026,661)
1 × 1026661
First multiples
1,026,661 · 2,053,322 (double) · 3,079,983 · 4,106,644 · 5,133,305 · 6,159,966 · 7,186,627 · 8,213,288 · 9,239,949 · 10,266,610

Sums & aliquot sequence

As a sum of two squares: 81² + 1,010²
As consecutive integers: 513,330 + 513,331

Continued fraction of √n

√1,026,661 = [1013; (4, 8, 2, 4, 3, 1, 26, 3, 1, 8, 1, 3, 5, 11, 14, 1, 2, 2, 1, 3, 3, 2, 1, 2, …)]

Representations

In words
one million twenty-six thousand six hundred sixty-one
Ordinal
1026661st
Binary
11111010101001100101
Octal
3725145
Hexadecimal
0xFAA65
Base64
D6pl
One's complement
4,293,940,634 (32-bit)
Scientific notation
1.026661 × 10⁶
As a duration
1,026,661 s = 11 days, 21 hours, 11 minutes, 1 second
In other bases
ternary (3) 1221011022111
quaternary (4) 3322221211
quinary (5) 230323121
senary (6) 34001021
septenary (7) 11504116
nonary (9) 1834274
undecimal (11) 641389
duodecimal (12) 416171
tridecimal (13) 29c3bc
tetradecimal (14) 1ca20d
pentadecimal (15) 1542e1

As an angle

1,026,661° = 2,851 × 360° + 301°
301° ≈ 5.253 rad
Compass bearing: WNW (west-northwest)

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒁹 𒁹
Egyptian hieroglyphic
𓁨𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Chinese
一百零二萬六千六百六十一
Chinese (financial)
壹佰零貳萬陸仟陸佰陸拾壹
In other modern scripts
Eastern Arabic ١٠٢٦٦٦١ Devanagari १०२६६६१ Bengali ১০২৬৬৬১ Tamil ௧௦௨௬௬௬௧ Thai ๑๐๒๖๖๖๑ Tibetan ༡༠༢༦༦༦༡ Khmer ១០២៦៦៦១ Lao ໑໐໒໖໖໖໑ Burmese ၁၀၂၆၆၆၁

Also seen as

Prime neighborhood

Adjacent primes:

Pair status: sexy with 1026667.

Hex color
#0FAA65
RGB(15, 170, 101)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.15.170.101.

Address
0.15.170.101
Class
reserved
IPv4-mapped IPv6
::ffff:0.15.170.101

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

Possible date

Could be parsed as a date. Most likely interpretation: Wednesday, January 2, 6661 (MDDYYYY (US, single-digit month)).

Other possible interpretations (3)
  • 6661-02-01 (DMMYYYY (Euro, single-digit day))
  • 6661-10-02 (MMDYYYY (US, single-digit day))
  • 6661-02-10 (DDMYYYY (Euro, single-digit month))
Possible US patent number

This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 1,026,661 and was likely granted around 1912.

Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.

Related reading

  • Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
  • Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.