655188 has 24 divisors (see below), whose sum is σ = 1552320. Its totient is φ = 215040.

The previous prime is 655181. The next prime is 655211. The reversal of 655188 is 881556.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 655188.

It is not an unprimeable number, because it can be changed into a prime (655181) by changing a digit.

655188 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 468 + ... + 1236.

It is an arithmetic number, because the mean of its divisors is an integer number (64680).

2⁶⁵⁵¹⁸⁸ is an apocalyptic number.

It is an amenable number.

655188 is an abundant number, since it is smaller than the sum of its proper divisors (897132).

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

655188 is a wasteful number, since it uses less digits than its factorization.

655188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 845 counting only the distinct ones).

The product of its digits is 9600, while the sum is 33.

The square root of 655188 is about 809.4368412668. The cubic root of 655188 is about 86.8537641106.

It can be divided in two parts, 65 and 5188, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 655188 in words is "six hundred fifty-five thousand, one hundred eighty-eight".