266904 has 48 divisors (see below), whose sum is σ = 790920. Its totient is φ = 80640.

The previous prime is 266899. The next prime is 266909. The reversal of 266904 is 409662.

It is an interprime number because it is at equal distance from previous prime (266899) and next prime (266909).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266909) by changing a digit.

266904 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 11 ways as a sum of consecutive naturals, for example, 624 + ... + 960.

2²⁶⁶⁹⁰⁴ is an apocalyptic number.

266904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395460).

266904 is an abundant number, since it is smaller than the sum of its proper divisors (524016).

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

266904 is a wasteful number, since it uses less digits than its factorization.

266904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 266904 is about 516.6275253991. The cubic root of 266904 is about 64.3850485461.

The spelling of 266904 in words is "two hundred sixty-six thousand, nine hundred four".