255689066 has 16 divisors (see below), whose sum is σ = 393417000. Its totient is φ = 124582848.

The previous prime is 255689059. The next prime is 255689069. The reversal of 255689066 is 660986552.

It can be written as a sum of positive squares in 4 ways, for example, as 195300625 + 60388441 = 13975^2 + 7771^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 255689066.

It is not an unprimeable number, because it can be changed into a prime (255689069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7700 + ... + 23888.

Almost surely, 2^255689066 is an apocalyptic number.

255689066 is a deficient number, since it is larger than the sum of its proper divisors (137727934).

255689066 is a wasteful number, since it uses less digits than its factorization.

255689066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16393.

The product of its (nonzero) digits is 777600, while the sum is 47.

The square root of 255689066 is about 15990.2803602689. The cubic root of 255689066 is about 634.7032453059.

The spelling of 255689066 in words is "two hundred fifty-five million, six hundred eighty-nine thousand, sixty-six".