655360 has 36 divisors (see below), whose sum is σ = 1572858. Its totient is φ = 262144.

The previous prime is 655357. The next prime is 655373. The reversal of 655360 is 63556.

It can be written as a sum of positive squares in only one way, i.e., 589824 + 65536 = 768^2 + 256^2 .

It is a nialpdrome in base 4 and base 16.

It is a zygodrome in base 4.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (2) of ones.

In principle, a polygon with 655360 sides can be constructed with ruler and compass.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131070 + ... + 131074.

2⁶⁵⁵³⁶⁰ 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 655360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (786429).

655360 is an abundant number, since it is smaller than the sum of its proper divisors (917498).

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

655360 is an frugal number, since it uses more digits than its factorization.

655360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 655360 is about 809.5430810031. The cubic root of 655360 is about 86.8613637310.

The spelling of 655360 in words is "six hundred fifty-five thousand, three hundred sixty".