663333705 has 40 divisors (see below), whose sum is σ = 1193901192. Its totient is φ = 352346112.

The previous prime is 663333683. The next prime is 663333709. The reversal of 663333705 is 507333366.

663333705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 361304064 + 302029641 = 19008^2 + 17379^2 .

It is not a de Polignac number, because 663333705 - 2⁷ = 663333577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 663333705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663333709) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 100899 + ... + 107271.

Almost surely, 2^663333705 is an apocalyptic number.

It is an amenable number.

663333705 is a deficient number, since it is larger than the sum of its proper divisors (530567487).

663333705 is a wasteful number, since it uses less digits than its factorization.

663333705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6647 (or 6638 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 36.

The square root of 663333705 is about 25755.2655781298. The cubic root of 663333705 is about 872.1222268033.

The spelling of 663333705 in words is "six hundred sixty-three million, three hundred thirty-three thousand, seven hundred five".