2255646 has 16 divisors (see below), whose sum is σ = 4554000. Its totient is φ = 744768.

The previous prime is 2255639. The next prime is 2255657. The reversal of 2255646 is 6465522.

2255646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2³ + 2¹⁷ + 5⁷ + 5⁹ + 6⁶ + 4 + 6⁶ .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071 + ... + 2378.

It is an arithmetic number, because the mean of its divisors is an integer number (284625).

2^2255646 is an apocalyptic number.

2255646 is an abundant number, since it is smaller than the sum of its proper divisors (2298354).

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

2255646 is a wasteful number, since it uses less digits than its factorization.

2255646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563.

The product of its digits is 14400, while the sum is 30.

The square root of 2255646 is about 1501.8808208377. The cubic root of 2255646 is about 131.1465833883.

The spelling of 2255646 in words is "two million, two hundred fifty-five thousand, six hundred forty-six".