266087 has 6 divisors (see below), whose sum is σ = 278712. Its totient is φ = 254012.

The previous prime is 266083. The next prime is 266089. The reversal of 266087 is 780662.

It is not a de Polignac number, because 266087 - 2² = 266083 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 278 + ... + 780.

It is an arithmetic number, because the mean of its divisors is an integer number (46452).

2²⁶⁶⁰⁸⁷ is an apocalyptic number.

266087 is a deficient number, since it is larger than the sum of its proper divisors (12625).

266087 is an equidigital number, since it uses as much as digits as its factorization.

266087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 266087 is about 515.8362143161. The cubic root of 266087 is about 64.3192866383.

The spelling of 266087 in words is "two hundred sixty-six thousand, eighty-seven".