Decimal number

-646.5

Negative
Decimal
1 d.p.
Exact fraction

-646.5 is a decimal number equal to -1,293⁄2. It lies between -647 and -646, and as a percentage it is -64,650%.

Number properties

Absolute value646.5

SignNegative

Integer part-646

Fractional part0.5

Decimal places1

Floor-647

Ceiling-646

Rounded to nearest-646

Truncated-646

Fractions & ratios

As a fraction-1,293/2exact

Ratio-1,293 : 2

As a percentage-64,650%

Reciprocal-0.0015467904≈

Arithmetic

Double-1,293

Half-323.25

Square417,962.25

Cube-270,212,594.625

Cube root-8.6468151818≈

Negation646.5

Representations

Decimal-646.5

Scientific notation-6.465 × 10^2

Exponential-6.465e+2

IEEE 754 binary64 (hex)0xC084340000000000the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0xC421A00032-bit single precision, may lose accuracy

Stored as-646.5the nearest binary64 value to what you typed

Rounding

To 0 decimal places-647

To 1 decimal place-646.5

To 2 decimal places-646.50

To 3 decimal places-646.500

To 4 decimal places-646.5000

To 1 significant figure-600

To 2 significant figures-650

To 3 significant figures-647

Keep nerding

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