663775577366 has 16 divisors (see below), whose sum is σ = 1150071054480. Its totient is φ = 283968161280.

The previous prime is 663775577351. The next prime is 663775577407.

663775577366 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 663775577296 and 663775577305.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887400131 + ... + 887400878.

It is an arithmetic number, because the mean of its divisors is an integer number (71879440905).

Almost surely, 2^663775577366 is an apocalyptic number.

663775577366 is a deficient number, since it is larger than the sum of its proper divisors (486295477114).

663775577366 is a wasteful number, since it uses less digits than its factorization.

663775577366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774801039.

The product of its digits is 700131600, while the sum is 68.

The spelling of 663775577366 in words is "six hundred sixty-three billion, seven hundred seventy-five million, five hundred seventy-seven thousand, three hundred sixty-six".