663047520 has 48 divisors (see below), whose sum is σ = 2088601200. Its totient is φ = 176812544.

The previous prime is 663047513. The next prime is 663047537. The reversal of 663047520 is 25740366.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 690195 + ... + 691154.

It is an arithmetic number, because the mean of its divisors is an integer number (43512525).

Almost surely, 2^663047520 is an apocalyptic number.

663047520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

663047520 is an abundant number, since it is smaller than the sum of its proper divisors (1425553680).

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

663047520 is a wasteful number, since it uses less digits than its factorization.

663047520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381367 (or 1381359 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 663047520 is about 25749.7091245707. The cubic root of 663047520 is about 871.9967875762.

Adding to 663047520 its reverse (25740366), we get a palindrome (688787886).

The spelling of 663047520 in words is "six hundred sixty-three million, forty-seven thousand, five hundred twenty".