Live analysis

6,401

6,401 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.).

Arithmetic Number Deficient Number Evil Number Recamán's Sequence Semiprime Squarefree

Properties

Parity: Odd
Digit count: 4
Digit sum: 11
Digit product: 0
Digital root: 2
Palindrome: No
Bit width: 13 bits
Reversed: 1,046
Recamán's sequence: a(27,098) = 6,401
Square (n²): 40,972,801
Cube (n³): 262,266,899,201
Divisor count: 4
σ(n) — sum of divisors: 6,612
φ(n) — Euler's totient: 6,192
Sum of prime factors: 210

Primality

Prime factorization: 37 × 173

Nearest primes: 6,397 (−4) · 6,421 (+20)

Divisors & multiples

All divisors (4)

1 · 37 · 173 · 6401

Aliquot sum (sum of proper divisors): 211

Factor pairs (a × b = 6,401)

1 × 6401

37 × 173

First multiples

6,401 · 12,802 (double) · 19,203 · 25,604 · 32,005 · 38,406 · 44,807 · 51,208 · 57,609 · 64,010

Sums & aliquot sequence

As a sum of two squares: 1² + 80² = 25² + 76²

As consecutive integers: 3,200 + 3,201 155 + 156 + … + 191 50 + 51 + … + 123

Aliquot sequence: 6,401 → 211 → 1 → 0 — terminates at zero

Representations

In words: six thousand four hundred one
Ordinal: 6401st
Binary: 1100100000001
Octal: 14401
Hexadecimal: 0x1901
Base64: GQE=
One's complement: 59,134 (16-bit)

In other bases

ternary (3) 22210002

quaternary (4) 1210001

quinary (5) 201101

senary (6) 45345

septenary (7) 24443

nonary (9) 8702

undecimal (11) 489a

duodecimal (12) 3855

tridecimal (13) 2bb5

tetradecimal (14) 2493

pentadecimal (15) 1d6b

Historical numeral systems

Babylonian (base 60): 𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic: 𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓏺
Greek (Milesian): ͵ϛυαʹ
Mayan (base 20): 𝋰·𝋠·𝋡
Chinese: 六千四百零一
Chinese (financial): 陸仟肆佰零壹

In other modern scripts

Eastern Arabic ٦٤٠١ Devanagari ६४०१ Bengali ৬৪০১ Tamil ௬௪௦௧ Thai ๖๔๐๑ Tibetan ༦༤༠༡ Khmer ៦៤០១ Lao ໖໔໐໑ Burmese ၆၄၀၁

Digit at this position in famous constants

π — Pi (π): Digit 6,401 = 0
e — Euler's number (e): Digit 6,401 = 6
φ — Golden ratio (φ): Digit 6,401 = 9
√2 — Pythagoras's (√2): Digit 6,401 = 3
ln 2 — Natural log of 2: Digit 6,401 = 5
γ — Euler-Mascheroni (γ): Digit 6,401 = 7

Also seen as

Unicode codepoint

ᤁ

Limbu Letter Ka

U+1901

Other letter (Lo)

UTF-8 encoding: E1 A4 81 (3 bytes).

Lookup U+1901 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#001901

RGB(0, 25, 1)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.25.1.

Address: 0.0.25.1
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.25.1

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

Position in π

The digit sequence 6401 first appears in π at position 2,077 of the decimal expansion (the 2,077ordinal-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.

Look up 6401 on Pi Search ↗