# 668

The numbers with a 8 subscript use Base 8 Octal notation.

For more familiar numbers: See Fifty-Four in Base 10 Decimal

## Nearby Numbers

Positive, nonzero integers within three units

51
638
Fifty-One in Base 8 Octal
52
648
Fifty-Two in Base 8 Octal
53
658
Fifty-Three in Base 8 Octal
55
678
Fifty-Five in Base 8 Octal
56
708
Fifty-Six in Base 8 Octal
57
718
Fifty-Seven in Base 8 Octal

## Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

## Reciprocal

A number multiplied with its reciprocal is one.

### `0.01136641136641136648`

The reciprocal of 54 in Base 8 Octal.

## Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 668 is a palindrome.

## Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Fifty-four is a composite number with 8 total factors (including 1 and itself).   See primes in Base 8 Octal

## A Composite

Composites have more than just these two factors.

Fifty-four is a composite number with 8 total factors (including 1 and itself).

## Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number fifty-four has the following 2 prime factors:

2
28
Two in Base 8 Octal
3
38
Three in Base 8 Octal

## Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

## Base Conversions

The number fifty-four in 35 different bases