266668880 has 40 divisors (see below), whose sum is σ = 621388800. Its totient is φ = 106429568.

The previous prime is 266668873. The next prime is 266668901. The reversal of 266668880 is 88866662.

266668880 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×266668880² = 142224583120908800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34841 + ... + 41799.

It is an arithmetic number, because the mean of its divisors is an integer number (15534720).

Almost surely, 2^266668880 is an apocalyptic number.

266668880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266668880 is an abundant number, since it is smaller than the sum of its proper divisors (354719920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266668880 is a wasteful number, since it uses less digits than its factorization.

266668880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7451 (or 7445 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 50.

The square root of 266668880 is about 16329.9993876301. Note that the first 3 decimals coincide. The cubic root of 266668880 is about 643.6613705237.

The spelling of 266668880 in words is "two hundred sixty-six million, six hundred sixty-eight thousand, eight hundred eighty".