660268256 has 48 divisors (see below), whose sum is σ = 1378177920. Its totient is φ = 310832640.

The previous prime is 660268243. The next prime is 660268309. The reversal of 660268256 is 652862066.

660268256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 27710 + ... + 45698.

It is an arithmetic number, because the mean of its divisors is an integer number (28712040).

Almost surely, 2^660268256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660268256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (689088960).

660268256 is an abundant number, since it is smaller than the sum of its proper divisors (717909664).

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

660268256 is a wasteful number, since it uses less digits than its factorization.

660268256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18067 (or 18059 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 660268256 is about 25695.6855522479. The cubic root of 660268256 is about 870.7767124520.

The spelling of 660268256 in words is "six hundred sixty million, two hundred sixty-eight thousand, two hundred fifty-six".