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1,006,661

1,006,661 is a composite number, 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.).

1,006,661 (one million six thousand six hundred sixty-one) is an odd 7-digit number. It is a composite number with 4 divisors, and factors as 947 × 1,063. Written other ways, in hexadecimal, 0xF5C45.

Arithmetic Number Cube-Free Deficient Number Flippable Odious Number Pernicious Number Semiprime Squarefree

Interestingness

Properties

Parity
Odd
Digit count
7
Digit sum
20
Digit product
0
Digital root
2
Palindrome
No
Bit width
20 bits
Reversed
1,666,001
Flips to (rotate 180°)
1,999,001
Square (n²)
1,013,366,368,921
Cube (n³)
1,020,116,402,304,382,781
Divisor count
4
σ(n) — sum of divisors
1,008,672
φ(n) — Euler's totient
1,004,652
Sum of prime factors
2,010

Primality

Prime factorization: 947 × 1063

Nearest primes: 1,006,651 (−10) · 1,006,711 (+50)

Divisors & multiples

All divisors (4)
1 · 947 · 1063 · 1006661
Aliquot sum (sum of proper divisors): 2,011
Factor pairs (a × b = 1,006,661)
1 × 1006661
947 × 1063
First multiples
1,006,661 · 2,013,322 (double) · 3,019,983 · 4,026,644 · 5,033,305 · 6,039,966 · 7,046,627 · 8,053,288 · 9,059,949 · 10,066,610

Sums & aliquot sequence

As consecutive integers: 503,330 + 503,331 590 + 591 + … + 1,536 416 + 417 + … + 1,478
Aliquot sequence: 1,006,661 2,011 1 0 — terminates at zero

Continued fraction of √n

√1,006,661 = [1003; (3, 12, 1, 21, 1, 1, 1, 1, 1, 4, 100, 8, 1, 1, 1, 1, 17, 6, 1, 1, 10, 1, 2, 19, …)]

Representations

In words
one million six thousand six hundred sixty-one
Ordinal
1006661st
Binary
11110101110001000101
Octal
3656105
Hexadecimal
0xF5C45
Base64
D1xF
One's complement
4,293,960,634 (32-bit)
Scientific notation
1.006661 × 10⁶
As a duration
1,006,661 s = 11 days, 15 hours, 37 minutes, 41 seconds
In other bases
ternary (3) 1220010212202
quaternary (4) 3311301011
quinary (5) 224203121
senary (6) 33324245
septenary (7) 11361605
nonary (9) 1803782
undecimal (11) 628357
duodecimal (12) 406685
tridecimal (13) 293276
tetradecimal (14) 1c2c05
pentadecimal (15) 14d40b

As an angle

1,006,661° = 2,796 × 360° + 101°
101° ≈ 1.763 rad
Compass bearing: E (east)

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic
𓁨𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Chinese
一百萬六千六百六十一
Chinese (financial)
壹佰萬陸仟陸佰陸拾壹
In other modern scripts
Eastern Arabic ١٠٠٦٦٦١ Devanagari १००६६६१ Bengali ১০০৬৬৬১ Tamil ௧௦௦௬௬௬௧ Thai ๑๐๐๖๖๖๑ Tibetan ༡༠༠༦༦༦༡ Khmer ១០០៦៦៦១ Lao ໑໐໐໖໖໖໑ Burmese ၁၀၀၆၆၆၁

Also seen as

Hex color
#0F5C45
RGB(15, 92, 69)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.15.92.69.

Address
0.15.92.69
Class
reserved
IPv4-mapped IPv6
::ffff:0.15.92.69

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

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 1,006,661 and was likely granted around 1911.

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

Position in π

The digit sequence 1006661 first appears in π at position 535,325 of the decimal expansion (the 535,325ordinal-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.

Related reading