The Number

2645

Two Thousand Six Hundred and Forty-Five

Nearby Numbers

Positive, nonzero integers within three units

2642
Two Thousand Six Hundred and Forty-Two
2643
Two Thousand Six Hundred and Forty-Three
2644
Two Thousand Six Hundred and Forty-Four
2646
Two Thousand Six Hundred and Forty-Six
2647
Two Thousand Six Hundred and Forty-Seven
2648
Two Thousand Six Hundred and Forty-Eight

Scientific Notation

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

2.645e3

Reciprocal

A number multiplied with its reciprocal is one.

0.0003780718336483932

The reciprocal of 2645.

Palindrome?

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

The number 2645 is not a palindrome.

Not A Prime Number

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

Two thousand six hundred and forty-five 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.

Two thousand six hundred and forty-five 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 two thousand six hundred and forty-five has the following 2 prime factors:

5
Five
23
Twenty-Three

Prime Factorization

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

51 · 232 = 2645

Base Conversions

The number two thousand six hundred and forty-five in 35 different bases