266804 has 6 divisors (see below), whose sum is σ = 466914. Its totient is φ = 133400.

The previous prime is 266801. The next prime is 266821. The reversal of 266804 is 408662.

It can be written as a sum of positive squares in only one way, i.e., 204304 + 62500 = 452^2 + 250^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33347 + ... + 33354.

It is an arithmetic number, because the mean of its divisors is an integer number (77819).

2²⁶⁶⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

266804 is a deficient number, since it is larger than the sum of its proper divisors (200110).

266804 is a wasteful number, since it uses less digits than its factorization.

266804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66705 (or 66703 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 266804 is about 516.5307348067. The cubic root of 266804 is about 64.3770065670.

The spelling of 266804 in words is "two hundred sixty-six thousand, eight hundred four".