266456 has 16 divisors (see below), whose sum is σ = 526200. Its totient is φ = 126144.

The previous prime is 266449. The next prime is 266477. The reversal of 266456 is 654662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725 + ... + 1028.

2²⁶⁶⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

266456 is a deficient number, since it is larger than the sum of its proper divisors (259744).

266456 is a wasteful number, since it uses less digits than its factorization.

266456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778 (or 1774 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 266456 is about 516.1937620700. The cubic root of 266456 is about 64.3490048058.

The spelling of 266456 in words is "two hundred sixty-six thousand, four hundred fifty-six".