266193 has 8 divisors (see below), whose sum is σ = 394400. Its totient is φ = 177444.

The previous prime is 266183. The next prime is 266221. The reversal of 266193 is 391662.

It is a happy number.

266193 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 266193 - 2⁴ = 266177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 9859 = 266193 / (2 + 6 + 6 + 1 + 9 + 3).

It is a Duffinian number.

266193 is strictly pandigital in base 7.

It is not an unprimeable number, because it can be changed into a prime (266153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4903 + ... + 4956.

It is an arithmetic number, because the mean of its divisors is an integer number (49300).

2²⁶⁶¹⁹³ is an apocalyptic number.

It is an amenable number.

266193 is a deficient number, since it is larger than the sum of its proper divisors (128207).

266193 is an equidigital number, since it uses as much as digits as its factorization.

266193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9868 (or 9862 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 266193 is about 515.9389498768. The cubic root of 266193 is about 64.3278263756.

The spelling of 266193 in words is "two hundred sixty-six thousand, one hundred ninety-three".