255787660 has 24 divisors (see below), whose sum is σ = 551673360. Its totient is φ = 99549504.

The previous prime is 255787621. The next prime is 255787663. The reversal of 255787660 is 66787552.

255787660 is digitally balanced in base 2, base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

255787660 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 255787660.

It is not an unprimeable number, because it can be changed into a prime (255787663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172090 + ... + 173569.

It is an arithmetic number, because the mean of its divisors is an integer number (22986390).

Almost surely, 2^255787660 is an apocalyptic number.

255787660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255787660 is an abundant number, since it is smaller than the sum of its proper divisors (295885700).

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

255787660 is a wasteful number, since it uses less digits than its factorization.

255787660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345705 (or 345703 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 46.

The square root of 255787660 is about 15993.3629984441. The cubic root of 255787660 is about 634.7848155911.

The spelling of 255787660 in words is "two hundred fifty-five million, seven hundred eighty-seven thousand, six hundred sixty".