663732496 has 80 divisors (see below), whose sum is σ = 1589469696. Its totient is φ = 261992448.

The previous prime is 663732481. The next prime is 663732499. The reversal of 663732496 is 694237366.

It is not an unprimeable number, because it can be changed into a prime (663732499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85780 + ... + 93196.

Almost surely, 2^663732496 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 663732496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (794734848).

663732496 is an abundant number, since it is smaller than the sum of its proper divisors (925737200).

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

663732496 is a wasteful number, since it uses less digits than its factorization.

663732496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7496 (or 7490 counting only the distinct ones).

The product of its digits is 979776, while the sum is 46.

The square root of 663732496 is about 25763.0063463098. The cubic root of 663732496 is about 872.2969627964.

The spelling of 663732496 in words is "six hundred sixty-three million, seven hundred thirty-two thousand, four hundred ninety-six".