663359520 has 48 divisors (see below), whose sum is σ = 2089584000. Its totient is φ = 176895744.

The previous prime is 663359509. The next prime is 663359527. The reversal of 663359520 is 25953366.

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

It is not an unprimeable number, because it can be changed into a prime (663359527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690520 + ... + 691479.

It is an arithmetic number, because the mean of its divisors is an integer number (43533000).

Almost surely, 2^663359520 is an apocalyptic number.

663359520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

663359520 is an abundant number, since it is smaller than the sum of its proper divisors (1426224480).

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

663359520 is a wasteful number, since it uses less digits than its factorization.

663359520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382017 (or 1382009 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 39.

The square root of 663359520 is about 25755.7667329086. The cubic root of 663359520 is about 872.1335401352.

It can be divided in two parts, 66335 and 9520, that added together give a triangular number (75855 = T₃₈₉).

The spelling of 663359520 in words is "six hundred sixty-three million, three hundred fifty-nine thousand, five hundred twenty".