It is an unprimeable number.
22755620 is an apocalyptic number.
2755620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 2755620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4960032).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2755620 is an frugal number, since it uses more digits than its factorization.
2755620 is an odious number, because the sum of its binary digits is odd.
The square root of 2755620 is about 1660.0060240855. The cubic root of 2755620 is about 140.1973407500.
The spelling of 2755620 in words is "two million, seven hundred fifty-five thousand, six hundred twenty".