2655620 has 24 divisors (see below), whose sum is σ = 6084288. Its totient is φ = 965600.

The previous prime is 2655607. The next prime is 2655623. The reversal of 2655620 is 265562.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2655620.

It is not an unprimeable number, because it can be changed into a prime (2655623) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5816 + ... + 6255.

It is an arithmetic number, because the mean of its divisors is an integer number (253512).

2^2655620 is an apocalyptic number.

2655620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2655620 is an abundant number, since it is smaller than the sum of its proper divisors (3428668).

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

2655620 is a wasteful number, since it uses less digits than its factorization.

2655620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12091 (or 12089 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2655620 is about 1629.6073146620. The cubic root of 2655620 is about 138.4805065815.

It can be divided in two parts, 265 and 5620, that added together give a palindrome (5885).

The spelling of 2655620 in words is "two million, six hundred fifty-five thousand, six hundred twenty".