2655618 has 32 divisors (see below), whose sum is σ = 6189696. Its totient is φ = 743808.

The previous prime is 2655607. The next prime is 2655623. The reversal of 2655618 is 8165562.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 1630 + ... + 2822.

It is an arithmetic number, because the mean of its divisors is an integer number (193428).

2^2655618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2655618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3094848).

2655618 is an abundant number, since it is smaller than the sum of its proper divisors (3534078).

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

2655618 is a wasteful number, since it uses less digits than its factorization.

2655618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258.

The product of its digits is 14400, while the sum is 33.

The square root of 2655618 is about 1629.6067010172. The cubic root of 2655618 is about 138.4804718174.

The spelling of 2655618 in words is "two million, six hundred fifty-five thousand, six hundred eighteen".