number.wiki
Number

65,535

65535 — Max UInt16

65,535 is a composite number, odd.

65,535 is (2^{16} - 1), the largest unsigned 16-bit integer and the highest port number in TCP/UDP.

Sources https://en.wikipedia.org/wiki/65,535
Curated Deficient Number Squarefree computing integer-limits

Properties

Parity
Odd
Digit count
5
Digit sum
24
Digital root
6
Palindrome
No
Divisor count
16
σ(n) — sum of divisors
111,456

Primality

Prime factorization: 3 × 5 × 17 × 257

Divisors & multiples

All divisors (16)
1 · 3 · 5 · 15 · 17 · 51 · 85 · 255 · 257 · 771 · 1285 · 3855 · 4369 · 13107 · 21845 · 65535
Aliquot sum (sum of proper divisors): 45,921
Factor pairs (a × b = 65,535)
1 × 65535
3 × 21845
5 × 13107
15 × 4369
17 × 3855
51 × 1285
85 × 771
255 × 257
First multiples
65,535 · 131,070 · 196,605 · 262,140 · 327,675 · 393,210 · 458,745 · 524,280 · 589,815 · 655,350

Representations

In words
sixty-five thousand five hundred thirty-five
Ordinal
65535th
Binary
1111111111111111
Octal
177777
Hexadecimal
FFFF

Also seen as

Hex color
#00FFFF
RGB(0, 255, 255)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.255.255.