255727766 has 32 divisors (see below), whose sum is σ = 450278400. Its totient is φ = 108877608.

The previous prime is 255727741. The next prime is 255727781. The reversal of 255727766 is 667727552.

It is a self number, because there is not a number n which added to its sum of digits gives 255727766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110675 + ... + 112961.

It is an arithmetic number, because the mean of its divisors is an integer number (14071200).

Almost surely, 2^255727766 is an apocalyptic number.

255727766 is a deficient number, since it is larger than the sum of its proper divisors (194550634).

255727766 is a wasteful number, since it uses less digits than its factorization.

255727766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473 (or 2459 counting only the distinct ones).

The product of its digits is 1234800, while the sum is 47.

The square root of 255727766 is about 15991.4904245977. The cubic root of 255727766 is about 634.7352656772.

The spelling of 255727766 in words is "two hundred fifty-five million, seven hundred twenty-seven thousand, seven hundred sixty-six".