655265 has 16 divisors (see below), whose sum is σ = 898128. Its totient is φ = 454656.

The previous prime is 655261. The next prime is 655267. The reversal of 655265 is 562556.

It can be written as a sum of positive squares in 8 ways, for example, as 2401 + 652864 = 49^2 + 808^2 .

It is a cyclic number.

It is not a de Polignac number, because 655265 - 2² = 655261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809 + ... + 1401.

It is an arithmetic number, because the mean of its divisors is an integer number (56133).

2⁶⁵⁵²⁶⁵ is an apocalyptic number.

655265 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

655265 is a deficient number, since it is larger than the sum of its proper divisors (242863).

655265 is a wasteful number, since it uses less digits than its factorization.

655265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628.

The product of its digits is 9000, while the sum is 29.

The square root of 655265 is about 809.4844038028. The cubic root of 655265 is about 86.8571664307.

It can be divided in two parts, 65 and 5265, that multiplied together give a square (342225 = 585²).

The spelling of 655265 in words is "six hundred fifty-five thousand, two hundred sixty-five".