266588 has 12 divisors (see below), whose sum is σ = 533232. Its totient is φ = 114240.

The previous prime is 266587. The next prime is 266599. The reversal of 266588 is 885662.

266588 is an admirable number.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 266588.

It is not an unprimeable number, because it can be changed into a prime (266587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4733 + ... + 4788.

It is an arithmetic number, because the mean of its divisors is an integer number (44436).

2²⁶⁶⁵⁸⁸ is an apocalyptic number.

266588 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

266588 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

266588 is a wasteful number, since it uses less digits than its factorization.

266588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9532 (or 9530 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 266588 is about 516.3216052036. The cubic root of 266588 is about 64.3596290319.

The spelling of 266588 in words is "two hundred sixty-six thousand, five hundred eighty-eight".