255576666 has 16 divisors (see below), whose sum is σ = 512492544. Its totient is φ = 84969024.

The previous prime is 255576661. The next prime is 255576683. The reversal of 255576666 is 666675552.

It is not an unprimeable number, because it can be changed into a prime (255576661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53311 + ... + 57906.

It is an arithmetic number, because the mean of its divisors is an integer number (32030784).

Almost surely, 2^255576666 is an apocalyptic number.

255576666 is an abundant number, since it is smaller than the sum of its proper divisors (256915878).

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

255576666 is a wasteful number, since it uses less digits than its factorization.

255576666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111605.

The product of its digits is 2268000, while the sum is 48.

The square root of 255576666 is about 15986.7653388670. The cubic root of 255576666 is about 634.6102272480.

It can be divided in two parts, 25557 and 6666, that added together give a palindrome (32223).

The spelling of 255576666 in words is "two hundred fifty-five million, five hundred seventy-six thousand, six hundred sixty-six".