663380544 has 56 divisors (see below), whose sum is σ = 1758939840. Its totient is φ = 220655104.

The previous prime is 663380537. The next prime is 663380567. The reversal of 663380544 is 445083366.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93142 + ... + 100010.

It is an arithmetic number, because the mean of its divisors is an integer number (31409640).

Almost surely, 2^663380544 is an apocalyptic number.

663380544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663380544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (879469920).

663380544 is an abundant number, since it is smaller than the sum of its proper divisors (1095559296).

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

663380544 is a wasteful number, since it uses less digits than its factorization.

663380544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7387 (or 7377 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 663380544 is about 25756.1748712809. The cubic root of 663380544 is about 872.1427536116.

The spelling of 663380544 in words is "six hundred sixty-three million, three hundred eighty thousand, five hundred forty-four".