255678 has 16 divisors (see below), whose sum is σ = 523776. Its totient is φ = 83160.

The previous prime is 255667. The next prime is 255679. The reversal of 255678 is 876552.

It is a happy number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255679) 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 7 ways as a sum of consecutive naturals, for example, 238 + ... + 753.

It is an arithmetic number, because the mean of its divisors is an integer number (32736).

2²⁵⁵⁶⁷⁸ is an apocalyptic number.

255678 is an abundant number, since it is smaller than the sum of its proper divisors (268098).

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

255678 is a wasteful number, since it uses less digits than its factorization.

255678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039.

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

The square root of 255678 is about 505.6461213141. The cubic root of 255678 is about 63.4694088706.

The spelling of 255678 in words is "two hundred fifty-five thousand, six hundred seventy-eight".