255706 has 16 divisors (see below), whose sum is σ = 427680. Its totient is φ = 113680.

The previous prime is 255679. The next prime is 255709. The reversal of 255706 is 607552.

It is a happy number.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (255709) by changing a digit.

255706 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1200 + ... + 1396.

It is an arithmetic number, because the mean of its divisors is an integer number (26730).

2²⁵⁵⁷⁰⁶ is an apocalyptic number.

255706 is a deficient number, since it is larger than the sum of its proper divisors (171974).

255706 is a wasteful number, since it uses less digits than its factorization.

255706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 255706 is about 505.6738079039. The cubic root of 255706 is about 63.4717256891.

It can be divided in two parts, 255 and 706, that added together give a square (961 = 31²).

The spelling of 255706 in words is "two hundred fifty-five thousand, seven hundred six".