266850 has 36 divisors (see below), whose sum is σ = 718146. Its totient is φ = 71040.

The previous prime is 266839. The next prime is 266863. The reversal of 266850 is 58662.

It can be written as a sum of positive squares in 3 ways, for example, as 210681 + 56169 = 459^2 + 237^2 .

It is a super-4 number, since 4×266850⁴ (a number of 23 digits) contains 4444 as substring.

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

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 154 + ... + 746.

2²⁶⁶⁸⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359073).

266850 is an abundant number, since it is smaller than the sum of its proper divisors (451296).

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

266850 is a wasteful number, since it uses less digits than its factorization.

266850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 266850 is about 516.5752607317. The cubic root of 266850 is about 64.3807061269.

The spelling of 266850 in words is "two hundred sixty-six thousand, eight hundred fifty".