655388 has 6 divisors (see below), whose sum is σ = 1146936. Its totient is φ = 327692.

The previous prime is 655387. The next prime is 655399. The reversal of 655388 is 883556.

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 655388.

It is not an unprimeable number, because it can be changed into a prime (655387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81920 + ... + 81927.

It is an arithmetic number, because the mean of its divisors is an integer number (191156).

2⁶⁵⁵³⁸⁸ is an apocalyptic number.

It is an amenable number.

655388 is a deficient number, since it is larger than the sum of its proper divisors (491548).

655388 is a wasteful number, since it uses less digits than its factorization.

655388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163851 (or 163849 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 655388 is about 809.5603745243. The cubic root of 655388 is about 86.8626007527.

The spelling of 655388 in words is "six hundred fifty-five thousand, three hundred eighty-eight".