The number 65

Representation numerals

Greek numeral

ξεʹ

Arabic numeral

٦٥

Roman numeral

LXV

Maya numeral

●●●
▃▃▃▃▃

Chinese numeral

六十五

Hebrew numeral

סה
Numeral systems
Binary: 1000001
Septimal (base 7): 122
Octal: 101
Hexadecimal: 41
Base 24: 2H
Factorization
65 = 5 × 13
65 has 4 divisors: 1, 5, 13, 65
Sum of all divisors other than 65: 19
Sums & differences
Sum of 2 squares: 65 = 72 + 42
Difference of 2 squares: 65 = 92 - 42 = 332 - 322
Characteristics
65 is a octogonal number
65 is a palindromic number in binary system (1000001)
Related primes
The 65th prime number is: 313
Previous prime number: 61 — Next prime number: 67

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