655488 has 48 divisors (see below), whose sum is σ = 1889550. Its totient is φ = 218112.

The previous prime is 655471. The next prime is 655489. The reversal of 655488 is 884556.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 627264 + 28224 = 792^2 + 168^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (655489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 868 + ... + 1436.

655488 is a Friedman number, since it can be written as 8+(8^5+6)*5*4, using all its digits and the basic arithmetic operations.

2⁶⁵⁵⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (944775).

655488 is an abundant number, since it is smaller than the sum of its proper divisors (1234062).

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

655488 is a wasteful number, since it uses less digits than its factorization.

655488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589 (or 574 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 655488 is about 809.6221340848. The cubic root of 655488 is about 86.8670183996.

It can be divided in two parts, 65548 and 8, that added together give a palindrome (65556).

The spelling of 655488 in words is "six hundred fifty-five thousand, four hundred eighty-eight".