663664466366 has 32 divisors (see below), whose sum is σ = 1088535801600. Its totient is φ = 300960961600.

The previous prime is 663664466321. The next prime is 663664466401.

It is a happy number.

663664466366 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 663664466299 and 663664466308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20686610 + ... + 20718666.

It is an arithmetic number, because the mean of its divisors is an integer number (34016743800).

Almost surely, 2^663664466366 is an apocalyptic number.

663664466366 is a deficient number, since it is larger than the sum of its proper divisors (424871335234).

663664466366 is a wasteful number, since it uses less digits than its factorization.

663664466366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34240.

The product of its digits is 241864704, while the sum is 62.

The spelling of 663664466366 in words is "six hundred sixty-three billion, six hundred sixty-four million, four hundred sixty-six thousand, three hundred sixty-six".