266444 has 12 divisors (see below), whose sum is σ = 474600. Its totient is φ = 130848.

The previous prime is 266417. The next prime is 266447. The reversal of 266444 is 444662.

266444 = T₆₄ + T₆₅ + ... + T₁₂₂.

It is a d-powerful number, because it can be written as 2⁷ + 6 + 4³ + 6 + 4⁶ + 4⁹ .

It is not an unprimeable number, because it can be changed into a prime (266447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329 + ... + 800.

It is an arithmetic number, because the mean of its divisors is an integer number (39550).

2²⁶⁶⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

266444 is a deficient number, since it is larger than the sum of its proper divisors (208156).

266444 is a wasteful number, since it uses less digits than its factorization.

266444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192 (or 1190 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 266444 is about 516.1821383969. The cubic root of 266444 is about 64.3480387931.

The spelling of 266444 in words is "two hundred sixty-six thousand, four hundred forty-four".