663963360 has 192 divisors, whose sum is σ = 2249856000. Its totient is φ = 164063232.

The previous prime is 663963359. The next prime is 663963371. The reversal of 663963360 is 63369366.

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, 427866 + ... + 429414.

It is an arithmetic number, because the mean of its divisors is an integer number (11718000).

Almost surely, 2^663963360 is an apocalyptic number.

663963360 is a gapful number since it is divisible by the number (60) 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 663963360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1124928000).

663963360 is an abundant number, since it is smaller than the sum of its proper divisors (1585892640).

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

663963360 is a wasteful number, since it uses less digits than its factorization.

663963360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633 (or 1625 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 42.

The square root of 663963360 is about 25767.4864897607. The cubic root of 663963360 is about 872.3980871816.

The spelling of 663963360 in words is "six hundred sixty-three million, nine hundred sixty-three thousand, three hundred sixty".