663708545807366 has 16 divisors (see below), whose sum is σ = 1006940279970720. Its totient is φ = 328063203314880.

The previous prime is 663708545807323. The next prime is 663708545807371.

663708545807366 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 663708545807293 and 663708545807302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353435306 + ... + 355308221.

It is an arithmetic number, because the mean of its divisors is an integer number (62933767498170).

Almost surely, 2^{663708545807366} is an apocalyptic number.

663708545807366 is a deficient number, since it is larger than the sum of its proper divisors (343231734163354).

663708545807366 is a wasteful number, since it uses less digits than its factorization.

663708545807366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708748879.

The product of its (nonzero) digits is 3657830400, while the sum is 74.

The spelling of 663708545807366 in words is "six hundred sixty-three trillion, seven hundred eight billion, five hundred forty-five million, eight hundred seven thousand, three hundred sixty-six".