266787 has 16 divisors (see below), whose sum is σ = 406560. Its totient is φ = 172800.

The previous prime is 266767. The next prime is 266797. The reversal of 266787 is 787662.

266787 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 266787 - 2¹¹ = 264739 is a prime.

266787 is strictly pandigital in base 7.

266787 is a lucky number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (266767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 987 + ... + 1227.

It is an arithmetic number, because the mean of its divisors is an integer number (25410).

2²⁶⁶⁷⁸⁷ is an apocalyptic number.

266787 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

266787 is a deficient number, since it is larger than the sum of its proper divisors (139773).

266787 is a wasteful number, since it uses less digits than its factorization.

266787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 285 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 266787 is about 516.5142786022. The cubic root of 266787 is about 64.3756392308.

The spelling of 266787 in words is "two hundred sixty-six thousand, seven hundred eighty-seven".