655589 has 8 divisors (see below), whose sum is σ = 723168. Its totient is φ = 589360.

The previous prime is 655583. The next prime is 655597. The reversal of 655589 is 985556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655589 is a prime.

It is a Duffinian number.

Its product of digits (54000) is a multiple of the sum of its prime divisors (675).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655583) 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, 899 + ... + 1455.

It is an arithmetic number, because the mean of its divisors is an integer number (90396).

2⁶⁵⁵⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

655589 is a deficient number, since it is larger than the sum of its proper divisors (67579).

655589 is a wasteful number, since it uses less digits than its factorization.

655589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675.

The product of its digits is 54000, while the sum is 38.

The square root of 655589 is about 809.6845064592. The cubic root of 655589 is about 86.8714797670.

The spelling of 655589 in words is "six hundred fifty-five thousand, five hundred eighty-nine".