663355066 has 16 divisors (see below), whose sum is σ = 1110735648. Its totient is φ = 294512400.

The previous prime is 663355061. The next prime is 663355067. The reversal of 663355066 is 660553366.

It is not an unprimeable number, because it can be changed into a prime (663355061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349665 + ... + 351556.

It is an arithmetic number, because the mean of its divisors is an integer number (69420978).

Almost surely, 2^663355066 is an apocalyptic number.

663355066 is a deficient number, since it is larger than the sum of its proper divisors (447380582).

663355066 is a wasteful number, since it uses less digits than its factorization.

663355066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701277.

The product of its (nonzero) digits is 291600, while the sum is 40.

The square root of 663355066 is about 25755.6802666907. The cubic root of 663355066 is about 872.1315882065.

The spelling of 663355066 in words is "six hundred sixty-three million, three hundred fifty-five thousand, sixty-six".