255704663 has 4 divisors (see below), whose sum is σ = 256005288. Its totient is φ = 255404040.

The previous prime is 255704653. The next prime is 255704671. The reversal of 255704663 is 366407552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255704663 - 2¹⁰ = 255703639 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 (255704623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149033 + ... + 150738.

It is an arithmetic number, because the mean of its divisors is an integer number (64001322).

Almost surely, 2^255704663 is an apocalyptic number.

255704663 is a deficient number, since it is larger than the sum of its proper divisors (300625).

255704663 is an equidigital number, since it uses as much as digits as its factorization.

255704663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300624.

The product of its (nonzero) digits is 151200, while the sum is 38.

The square root of 255704663 is about 15990.7680553499. The cubic root of 255704663 is about 634.7161506489.

The spelling of 255704663 in words is "two hundred fifty-five million, seven hundred four thousand, six hundred sixty-three".