Denshi Jisho — Online Japanese dictionary

幾つ いくつ 1: (Usually written using kana alone) how many?;
2: how old?
Common word, Adverb 
幾つか いくつか (a) few; some; several
No-adjective, Usually written using kana alone 
幾つも いくつも many; great number of
No-adjective, Usually written using kana alone 
幾つでも いくつでも any number of; ever so many
Adverb, Usually written using kana alone 

You can also

Look up kanji details for 幾つ.

Try a Yahoo Jisho search for 幾つ .
Try a Goo Jisho search for 幾つ .
Try a Google search for 幾つ .