Number 640, number theory characteristics and more…

Visual representations

Binary image (n×n bits)

Prime factorization

Representations of 640

Greek numeral

χμ

Sanskrit numeral

६४०

Arabic numeral

٦٤٠

Roman numeral

DCXL

Maya numeral

●

●●
▃▃▃▃▃
▃▃▃▃▃

ↂ

Chinese numeral

六百四十

Hebrew numeral

תרמ

Egyptian numeral

𓈖𓈖𓈖𓈖𓈖𓈖
𓎆𓎆𓎆𓎆

Morse code

-........------

640 in different numeral systems

Binary

1010000000

Base-3

Base-4

Base-5

Base-6

Base-7

Base-8

Duodecimal

Hex

Vigesimal

1c0

Base-24

12g

Base-36

hs

Negabinary

11110000000

Factorization

Prime factors: 2, 5

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

Sum of divisors other than 640: 890

Product of prime factors: 640 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5

Number-theory characteristics (6)

Difference of 2 squares Evil number Refactorable Even Composite Abundant

Base-10 digit properties (2)

These depend on the decimal representation of the number.

Harshad Duck number

Related primes

Number 640 prime

4751

Prime number before 640

631

Prime number after 640

641