266008881 has 4 divisors (see below), whose sum is σ = 354678512. Its totient is φ = 177339252.

The previous prime is 266008867. The next prime is 266008889. The reversal of 266008881 is 188800662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 266008881 - 2⁵ = 266008849 is a prime.

It is a super-2 number, since 2×266008881² = 141521449541744322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266008889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44334811 + ... + 44334816.

It is an arithmetic number, because the mean of its divisors is an integer number (88669628).

Almost surely, 2^266008881 is an apocalyptic number.

It is an amenable number.

266008881 is a deficient number, since it is larger than the sum of its proper divisors (88669631).

266008881 is an equidigital number, since it uses as much as digits as its factorization.

266008881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88669630.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 266008881 is about 16309.7786925513. The cubic root of 266008881 is about 643.1299164182.

The spelling of 266008881 in words is "two hundred sixty-six million, eight thousand, eight hundred eighty-one".