266640424 has 16 divisors (see below), whose sum is σ = 516078720. Its totient is φ = 129019440.

The previous prime is 266640419. The next prime is 266640443. The reversal of 266640424 is 424046662.

266640424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 266640424.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537334 + ... + 537829.

It is an arithmetic number, because the mean of its divisors is an integer number (32254920).

Almost surely, 2^266640424 is an apocalyptic number.

It is an amenable number.

266640424 is a deficient number, since it is larger than the sum of its proper divisors (249438296).

266640424 is a wasteful number, since it uses less digits than its factorization.

266640424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075200 (or 1075196 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 266640424 is about 16329.1280844998. The cubic root of 266640424 is about 643.6384748644.

The spelling of 266640424 in words is "two hundred sixty-six million, six hundred forty thousand, four hundred twenty-four".