663560304 has 160 divisors (see below), whose sum is σ = 1974302208. Its totient is φ = 190080000.

The previous prime is 663560279. The next prime is 663560311. The reversal of 663560304 is 403065366.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1226274 + ... + 1226814.

Almost surely, 2^663560304 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 663560304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (987151104).

663560304 is an abundant number, since it is smaller than the sum of its proper divisors (1310741904).

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

663560304 is a wasteful number, since it uses less digits than its factorization.

663560304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 663560304 is about 25759.6642835267. The cubic root of 663560304 is about 872.2215229917.

The spelling of 663560304 in words is "six hundred sixty-three million, five hundred sixty thousand, three hundred four".