Current Section
Number Database
The purpose of this section is to discover unexpected connections between various material and occult phenomena. A great resource for mathematicians. Notable Events for over 2000 years of history: Discover unusual synchronicities in World History. 2500 plus pages.
Other Sections
Character / Virtues
Tactics and Self Defense
Conceptual Science
Spirituality
Esoteric Wisdom
Science
Healing Society
Living Space
Magick
Health / Fitness
Financial Freedom
Unexplained Mysteries
About Us
The Main Number Sections:
0 - 500 | 501 - 1000 | 1001 - 1500 | 1501 - 2000 | 2001 - 2500
Number Articles | Higher Numbers | Random Number
<644 Number Data-Base
Random Number 		646>

The Number 645: Properties and Meanings

Prime Factors of 645=3x5x43.

645 is an Octagonal Number.

645 is a 66-gonal Number.

645 is a 216-gonal Number.

645 is a Centered 23-gonal Number.

645 is a Heptagonal Pyramidal Number.

645 is the number of + signs needed to write the Partitions of 14.


The Year 645 AD

In the year 645 AD...

<644 Number Data-Base
Random Number 		646>
The Main Number Sections:
0 - 500 | 501 - 1000 | 1001 - 1500 | 1501 - 2000 | 2001 - 2500
Number Articles | Higher Numbers | Random Number
Number / Mathematics Forum Check out the latest Number / Mathematics Forum Topics: