663969848 has 64 divisors (see below), whose sum is σ = 1319198400. Its totient is φ = 312847360.

The previous prime is 663969829. The next prime is 663969851. The reversal of 663969848 is 848969366.

Its product of digits (13436928) is a multiple of the sum of its prime factors (512).

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 15 ways as a sum of consecutive naturals, for example, 2849540 + ... + 2849772.

It is an arithmetic number, because the mean of its divisors is an integer number (20612475).

Almost surely, 2^663969848 is an apocalyptic number.

It is an amenable number.

663969848 is a deficient number, since it is larger than the sum of its proper divisors (655228552).

663969848 is a wasteful number, since it uses less digits than its factorization.

663969848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 508 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 59.

The square root of 663969848 is about 25767.6123845420. The cubic root of 663969848 is about 872.4009287542.

The spelling of 663969848 in words is "six hundred sixty-three million, nine hundred sixty-nine thousand, eight hundred forty-eight".