266766 has 16 divisors (see below), whose sum is σ = 538704. Its totient is φ = 88064.

The previous prime is 266759. The next prime is 266767. The reversal of 266766 is 667662.

It is a congruent number.

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

266766 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910 + ... + 1166.

It is an arithmetic number, because the mean of its divisors is an integer number (33669).

2²⁶⁶⁷⁶⁶ is an apocalyptic number.

266766 is an abundant number, since it is smaller than the sum of its proper divisors (271938).

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

266766 is a wasteful number, since it uses less digits than its factorization.

266766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435.

The product of its digits is 18144, while the sum is 33.

The square root of 266766 is about 516.4939496257. The cubic root of 266766 is about 64.3739500881.

The spelling of 266766 in words is "two hundred sixty-six thousand, seven hundred sixty-six".