663345776 has 10 divisors (see below), whose sum is σ = 1285232472. Its totient is φ = 331672880.

The previous prime is 663345743. The next prime is 663345799. The reversal of 663345776 is 677543366.

663345776 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 663345776.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20729540 + ... + 20729571.

Almost surely, 2^663345776 is an apocalyptic number.

It is an amenable number.

663345776 is a deficient number, since it is larger than the sum of its proper divisors (621886696).

663345776 is a wasteful number, since it uses less digits than its factorization.

663345776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41459119 (or 41459113 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 47.

The square root of 663345776 is about 25755.4999174934. The cubic root of 663345776 is about 872.1275169126.

The spelling of 663345776 in words is "six hundred sixty-three million, three hundred forty-five thousand, seven hundred seventy-six".