266980881 has 8 divisors (see below), whose sum is σ = 356050080. Its totient is φ = 177949472.

The previous prime is 266980867. The next prime is 266980891. The reversal of 266980881 is 188089662.

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

It is a cyclic number.

It is not a de Polignac number, because 266980881 - 2²² = 262786577 is a prime.

It is a super-2 number, since 2×266980881² = 142557581639072322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 266980881.

It is not an unprimeable number, because it can be changed into a prime (266980891) 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, 21925 + ... + 31853.

It is an arithmetic number, because the mean of its divisors is an integer number (44506260).

Almost surely, 2^266980881 is an apocalyptic number.

It is an amenable number.

266980881 is a deficient number, since it is larger than the sum of its proper divisors (89069199).

266980881 is an equidigital number, since it uses as much as digits as its factorization.

266980881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18895.

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 266980881 is about 16339.5495959956. The cubic root of 266980881 is about 643.9122993429.

The spelling of 266980881 in words is "two hundred sixty-six million, nine hundred eighty thousand, eight hundred eighty-one".