663583284 has 216 divisors, whose sum is σ = 2213396640. Its totient is φ = 165691008.

The previous prime is 663583247. The next prime is 663583309. The reversal of 663583284 is 482385366.

It is a happy number.

663583284 is a `hidden beast` number, since 6 + 63 + 583 + 2 + 8 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 434947 + ... + 436469.

Almost surely, 2^663583284 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 663583284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1106698320).

663583284 is an abundant number, since it is smaller than the sum of its proper divisors (1549813356).

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

663583284 is a wasteful number, since it uses less digits than its factorization.

663583284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579 (or 1567 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 663583284 is about 25760.1103258507. The cubic root of 663583284 is about 872.2315916165.

The spelling of 663583284 in words is "six hundred sixty-three million, five hundred eighty-three thousand, two hundred eighty-four".