266089 has 2 divisors, whose sum is σ = 266090. Its totient is φ = 266088.

The previous prime is 266083. The next prime is 266093. The reversal of 266089 is 980662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242064 + 24025 = 492^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 266089 - 2³ = 266081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 266089.

It is not a weakly prime, because it can be changed into another prime (266081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133044 + 133045.

It is an arithmetic number, because the mean of its divisors is an integer number (133045).

2²⁶⁶⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

266089 is a deficient number, since it is larger than the sum of its proper divisors (1).

266089 is an equidigital number, since it uses as much as digits as its factorization.

266089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 266089 is about 515.8381529123. The cubic root of 266089 is about 64.3194477864.

The spelling of 266089 in words is "two hundred sixty-six thousand, eighty-nine".