655844 has 24 divisors (see below), whose sum is σ = 1337280. Its totient is φ = 275616.

The previous prime is 655807. The next prime is 655847. The reversal of 655844 is 448556.

It is a self number, because there is not a number n which added to its sum of digits gives 655844.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 655844.

It is not an unprimeable number, because it can be changed into a prime (655847) 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, 1454 + ... + 1850.

It is an arithmetic number, because the mean of its divisors is an integer number (55720).

2⁶⁵⁵⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

655844 is an abundant number, since it is smaller than the sum of its proper divisors (681436).

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

655844 is a wasteful number, since it uses less digits than its factorization.

655844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 465 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

The square root of 655844 is about 809.8419598909. The cubic root of 655844 is about 86.8827415767.

The spelling of 655844 in words is "six hundred fifty-five thousand, eight hundred forty-four".