266480681 has 16 divisors (see below), whose sum is σ = 299558400. Its totient is φ = 235872000.

The previous prime is 266480677. The next prime is 266480707. The reversal of 266480681 is 186084662.

266480681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 266480681 - 2² = 266480677 is a prime.

It is a super-2 number, since 2×266480681² = 142023906692447522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266480581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9281 + ... + 24881.

It is an arithmetic number, because the mean of its divisors is an integer number (18722400).

Almost surely, 2^266480681 is an apocalyptic number.

It is an amenable number.

266480681 is a deficient number, since it is larger than the sum of its proper divisors (33077719).

266480681 is a wasteful number, since it uses less digits than its factorization.

266480681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15680.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 266480681 is about 16324.2360004994. The cubic root of 266480681 is about 643.5099156128.

The spelling of 266480681 in words is "two hundred sixty-six million, four hundred eighty thousand, six hundred eighty-one".