255665683 has 20 divisors (see below), whose sum is σ = 321241088. Its totient is φ = 202260240.

The previous prime is 255665681. The next prime is 255665687. The reversal of 255665683 is 386566552.

It is not a de Polignac number, because 255665683 - 2¹ = 255665681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255665681) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27118 + ... + 35308.

Almost surely, 2^255665683 is an apocalyptic number.

255665683 is a deficient number, since it is larger than the sum of its proper divisors (65575405).

255665683 is an frugal number, since it uses more digits than its factorization.

255665683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8232 (or 8211 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 46.

The square root of 255665683 is about 15989.5491806367. The cubic root of 255665683 is about 634.6838966511.

The spelling of 255665683 in words is "two hundred fifty-five million, six hundred sixty-five thousand, six hundred eighty-three".