266199 has 8 divisors (see below), whose sum is σ = 359280. Its totient is φ = 175296.

The previous prime is 266183. The next prime is 266221. The reversal of 266199 is 991662.

It is a happy number.

266199 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 266199 - 2⁴ = 266183 is a prime.

266199 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232 + ... + 765.

It is an arithmetic number, because the mean of its divisors is an integer number (44910).

2²⁶⁶¹⁹⁹ is an apocalyptic number.

266199 is a deficient number, since it is larger than the sum of its proper divisors (93081).

266199 is an equidigital number, since it uses as much as digits as its factorization.

266199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089.

The product of its digits is 5832, while the sum is 33.

The square root of 266199 is about 515.9447644855. The cubic root of 266199 is about 64.3283096891.

It can be divided in two parts, 266 and 199, that added together give a triangular number (465 = T₃₀).

The spelling of 266199 in words is "two hundred sixty-six thousand, one hundred ninety-nine".