663854928 has 80 divisors (see below), whose sum is σ = 1874880000. Its totient is φ = 200736640.

The previous prime is 663854909. The next prime is 663854929. The reversal of 663854928 is 829458366.

663854928 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 not an unprimeable number, because it can be changed into a prime (663854929) 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, 315223 + ... + 317321.

It is an arithmetic number, because the mean of its divisors is an integer number (23436000).

Almost surely, 2^663854928 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 663854928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (937440000).

663854928 is an abundant number, since it is smaller than the sum of its proper divisors (1211025072).

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

663854928 is a wasteful number, since it uses less digits than its factorization.

663854928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720 (or 2714 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The square root of 663854928 is about 25765.3823569533. The cubic root of 663854928 is about 872.3505940893.

The spelling of 663854928 in words is "six hundred sixty-three million, eight hundred fifty-four thousand, nine hundred twenty-eight".