255643760 has 20 divisors (see below), whose sum is σ = 594371928. Its totient is φ = 102257472.

The previous prime is 255643753. The next prime is 255643769. The reversal of 255643760 is 67346552.

255643760 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255643769) 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, 1597694 + ... + 1597853.

Almost surely, 2^255643760 is an apocalyptic number.

255643760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255643760 is an abundant number, since it is smaller than the sum of its proper divisors (338728168).

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

255643760 is a wasteful number, since it uses less digits than its factorization.

255643760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195560 (or 3195554 counting only the distinct ones).

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

The square root of 255643760 is about 15988.8636244106. The cubic root of 255643760 is about 634.6657550262.

The spelling of 255643760 in words is "two hundred fifty-five million, six hundred forty-three thousand, seven hundred sixty".