655284 has 48 divisors (see below), whose sum is σ = 1814400. Its totient is φ = 180096.

The previous prime is 655283. The next prime is 655289. The reversal of 655284 is 482556.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2302 + ... + 2570.

It is an arithmetic number, because the mean of its divisors is an integer number (37800).

655284 is a Friedman number, since it can be written as 84*(6^5+5^2), using all its digits and the basic arithmetic operations.

2⁶⁵⁵²⁸⁴ 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 655284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (907200).

655284 is an abundant number, since it is smaller than the sum of its proper divisors (1159116).

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

655284 is a wasteful number, since it uses less digits than its factorization.

655284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 310 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 655284 is about 809.4961395831. The cubic root of 655284 is about 86.8580059232.

It can be divided in two parts, 655 and 284, that added together give a palindrome (939).

The spelling of 655284 in words is "six hundred fifty-five thousand, two hundred eighty-four".