255863608 has 128 divisors (see below), whose sum is σ = 653184000. Its totient is φ = 90731520.

The previous prime is 255863579. The next prime is 255863659. The reversal of 255863608 is 806368552.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 712533 + ... + 712891.

It is an arithmetic number, because the mean of its divisors is an integer number (5103000).

Almost surely, 2^255863608 is an apocalyptic number.

255863608 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255863608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326592000).

255863608 is an abundant number, since it is smaller than the sum of its proper divisors (397320392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255863608 is a wasteful number, since it uses less digits than its factorization.

255863608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The square root of 255863608 is about 15995.7371821370. The cubic root of 255863608 is about 634.8476357528.

It can be divided in two parts, 2558 and 63608, that added together give a palindrome (66166).

The spelling of 255863608 in words is "two hundred fifty-five million, eight hundred sixty-three thousand, six hundred eight".