266234 has 4 divisors (see below), whose sum is σ = 399354. Its totient is φ = 133116.

The previous prime is 266221. The next prime is 266239. The reversal of 266234 is 432662.

Added to its reverse (432662) it gives a square (698896 = 836²).

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 253009 + 13225 = 503^2 + 115^2 .

It is not an unprimeable number, because it can be changed into a prime (266239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66557 + ... + 66560.

2²⁶⁶²³⁴ is an apocalyptic number.

266234 is a deficient number, since it is larger than the sum of its proper divisors (133120).

266234 is a wasteful number, since it uses less digits than its factorization.

266234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133119.

The product of its digits is 1728, while the sum is 23.

The square root of 266234 is about 515.9786817302. The cubic root of 266234 is about 64.3311288735.

Adding to 266234 its reverse (432662), we get a palindrome (698896).

The spelling of 266234 in words is "two hundred sixty-six thousand, two hundred thirty-four".