255705767 has 4 divisors (see below), whose sum is σ = 255738480. Its totient is φ = 255673056.

The previous prime is 255705757. The next prime is 255705773. The reversal of 255705767 is 767507552.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 255705767 - 2¹⁴ = 255689383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255705757) 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 3 ways as a sum of consecutive naturals, for example, 3023 + ... + 22815.

It is an arithmetic number, because the mean of its divisors is an integer number (63934620).

Almost surely, 2^255705767 is an apocalyptic number.

255705767 is a deficient number, since it is larger than the sum of its proper divisors (32713).

255705767 is a wasteful number, since it uses less digits than its factorization.

255705767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32712.

The product of its (nonzero) digits is 514500, while the sum is 44.

The square root of 255705767 is about 15990.8025752306. The cubic root of 255705767 is about 634.7170641058.

The spelling of 255705767 in words is "two hundred fifty-five million, seven hundred five thousand, seven hundred sixty-seven".