The Number

640001

Six Hundred and Forty Thousand and One

Nearby Numbers

Positive, nonzero integers within three units

639998
Six Hundred and Thirty-Nine Thousand Nine Hundred and Ninety-Eight
639999
Six Hundred and Thirty-Nine Thousand Nine Hundred and Ninety-Nine
640000
Six Hundred and Forty Thousand
640002
Six Hundred and Forty Thousand and Two
640003
Six Hundred and Forty Thousand and Three
640004
Six Hundred and Forty Thousand and Four

Scientific Notation

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

6.40001e5

Reciprocal

A number multiplied with its reciprocal is one.

0.0000015624975585975647

The reciprocal of 640001.

Palindrome?

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

The number 640001 is not a palindrome.

Not A Prime Number

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

Six hundred and forty thousand and one is a composite number with 6 total factors (including 1 and itself).   See primes in Base 10 Decimal

A Composite

Composites have more than just these two factors.

Six hundred and forty thousand and one is a composite number with 6 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 six hundred and forty thousand and one has the following 2 prime factors:

29
Twenty-Nine
761
Seven Hundred and Sixty-One

Prime Factorization

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

292 · 7611 = 640001

Base Conversions

The number six hundred and forty thousand and one in 35 different bases