678255 has 16 divisors (see below), whose sum is σ = 1098240. Its totient is φ = 357408.

The previous prime is 678253. The next prime is 678289. The reversal of 678255 is 552876.

It is a happy number.

It is not a de Polignac number, because 678255 - 2¹ = 678253 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 678255.

It is not an unprimeable number, because it can be changed into a prime (678253) 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, 1326 + ... + 1764.

It is an arithmetic number, because the mean of its divisors is an integer number (68640).

2⁶⁷⁸²⁵⁵ is an apocalyptic number.

678255 is a deficient number, since it is larger than the sum of its proper divisors (419985).

678255 is a wasteful number, since it uses less digits than its factorization.

678255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550.

The product of its digits is 16800, while the sum is 33.

The square root of 678255 is about 823.5623837937. The cubic root of 678255 is about 87.8613087361.

The spelling of 678255 in words is "six hundred seventy-eight thousand, two hundred fifty-five".