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The word 
is in the Wiktionary
2 short excerpts of Wiktionnary (A collaborative project to produce a free-content dictionary.)
— English word —
- perfect␣number n. (Number theory) A number that is the sum of all of its divisors except itself.
— English word, defined in French —
- perfect␣number n. Nombre parfait.
14 English words from the English definition
all all␣of divisors except its itself number Number␣theory of␣all sum that that␣is the theory
1 English word from the foreign definition
2 foreign words from the foreign definition
One suffix (New word found by adding one or more letters at the end of the word.)
2 times in the middle (New words found by adding letters in front and at the end of the word.)
hemiperfect␣numbers hyperperfect␣numbers
2 prefixes (New words found by adding one or more letters in front of the word.)
hemiperfect␣number hyperperfect␣number
29 words-in-word (Words found as is inside the word. Minimum size 3 letters.)
ber ctn CTN ECT ect. erf FEC MBE num num. Num. numb number per PER per- per. Per. perf perf. perfec' perfect RFE umb UMB umb- umbe umbe- umber
21 words-in-word RTL (Words found written from right to left, inside the word. Minimum size 3 letters.)
CEF cef- C.E.F. C.␣E.␣F. CEFR EBM mun Mun MUN Mun. munt NTC reb Reb REB rep Rep REP Rep. tce TCE
One anagram found with an extra letter (New word formed with all the letters from the word and an extra letter.)
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