2655220 has 12 divisors (see below), whose sum is σ = 5576004. Its totient is φ = 1062080.

The previous prime is 2655217. The next prime is 2655221. The reversal of 2655220 is 225562.

It can be written as a sum of positive squares in 2 ways, for example, as 1205604 + 1449616 = 1098^2 + 1204^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2655191 and 2655200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2655221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66361 + ... + 66400.

It is an arithmetic number, because the mean of its divisors is an integer number (464667).

2^2655220 is an apocalyptic number.

2655220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2655220 is an abundant number, since it is smaller than the sum of its proper divisors (2920784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2655220 is a wasteful number, since it uses less digits than its factorization.

2655220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132770 (or 132768 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 2655220 is about 1629.4845810869. The cubic root of 2655220 is about 138.4735534050.

The spelling of 2655220 in words is "two million, six hundred fifty-five thousand, two hundred twenty".