2555660 has 24 divisors (see below), whose sum is σ = 5470416. Its totient is φ = 1002560.

The previous prime is 2555647. The next prime is 2555669. The reversal of 2555660 is 665552.

It is not an unprimeable number, because it can be changed into a prime (2555669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146 + ... + 2265.

It is an arithmetic number, because the mean of its divisors is an integer number (227934).

2^2555660 is an apocalyptic number.

2555660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2555660 is an abundant number, since it is smaller than the sum of its proper divisors (2914756).

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

2555660 is a wasteful number, since it uses less digits than its factorization.

2555660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473 (or 2471 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 2555660 is about 1598.6431746953. The cubic root of 2555660 is about 136.7207268449.

The spelling of 2555660 in words is "two million, five hundred fifty-five thousand, six hundred sixty".