2755620 has 120 divisors (see below), whose sum is σ = 9920064. Its totient is φ = 629856.

The previous prime is 2755619. The next prime is 2755633. The reversal of 2755620 is 265572.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 393657 + ... + 393663.

2^2755620 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).

2755620 is an abundant number, since it is smaller than the sum of its proper divisors (7164444).

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 sum of its prime factors is 43 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 2755620 is about 1660.0060240855. The cubic root of 2755620 is about 140.1973407500.

It can be divided in two parts, 2755 and 620, that added together give a cube (3375 = 15³).

The spelling of 2755620 in words is "two million, seven hundred fifty-five thousand, six hundred twenty".