255857678 has 8 divisors (see below), whose sum is σ = 384462720. Its totient is φ = 127703440.

The previous prime is 255857669. The next prime is 255857699. The reversal of 255857678 is 876758552.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111278 + ... + 113553.

It is an arithmetic number, because the mean of its divisors is an integer number (48057840).

Almost surely, 2^255857678 is an apocalyptic number.

255857678 is a deficient number, since it is larger than the sum of its proper divisors (128605042).

255857678 is a wasteful number, since it uses less digits than its factorization.

255857678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225402.

The product of its digits is 4704000, while the sum is 53.

The square root of 255857678 is about 15995.5518191777. The cubic root of 255857678 is about 634.8427312184.

The spelling of 255857678 in words is "two hundred fifty-five million, eight hundred fifty-seven thousand, six hundred seventy-eight".