255742663 has 8 divisors (see below), whose sum is σ = 279795600. Its totient is φ = 231823680.

The previous prime is 255742637. The next prime is 255742673. The reversal of 255742663 is 366247552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 255742663 - 2²⁵ = 222188231 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 (255742633) 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, 29470 + ... + 37147.

It is an arithmetic number, because the mean of its divisors is an integer number (34974450).

Almost surely, 2^255742663 is an apocalyptic number.

255742663 is a deficient number, since it is larger than the sum of its proper divisors (24052937).

255742663 is a wasteful number, since it uses less digits than its factorization.

255742663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66977.

The product of its digits is 302400, while the sum is 40.

The square root of 255742663 is about 15991.9561967884. The cubic root of 255742663 is about 634.7475905905.

The spelling of 255742663 in words is "two hundred fifty-five million, seven hundred forty-two thousand, six hundred sixty-three".