266567 has 8 divisors (see below), whose sum is σ = 308256. Its totient is φ = 225792.

The previous prime is 266549. The next prime is 266587. The reversal of 266567 is 765662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 266567 - 2¹⁰ = 265543 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623 + ... + 959.

It is an arithmetic number, because the mean of its divisors is an integer number (38532).

2²⁶⁶⁵⁶⁷ is an apocalyptic number.

266567 is a deficient number, since it is larger than the sum of its proper divisors (41689).

266567 is a wasteful number, since it uses less digits than its factorization.

266567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its digits is 15120, while the sum is 32.

The square root of 266567 is about 516.3012686407. The cubic root of 266567 is about 64.3579390488.

The spelling of 266567 in words is "two hundred sixty-six thousand, five hundred sixty-seven".