266332091 has 4 divisors (see below), whose sum is σ = 266643000. Its totient is φ = 266021184.

The previous prime is 266332069. The next prime is 266332093. The reversal of 266332091 is 190233662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 266332091 - 2¹⁰ = 266331067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266332093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154166 + ... + 155883.

It is an arithmetic number, because the mean of its divisors is an integer number (66660750).

Almost surely, 2^266332091 is an apocalyptic number.

266332091 is a deficient number, since it is larger than the sum of its proper divisors (310909).

266332091 is an equidigital number, since it uses as much as digits as its factorization.

266332091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310908.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 266332091 is about 16319.6841574830. The cubic root of 266332091 is about 643.3902860322.

The spelling of 266332091 in words is "two hundred sixty-six million, three hundred thirty-two thousand, ninety-one".