664660585066466 has 32 divisors (see below), whose sum is σ = 1073707207752960. Its totient is φ = 307447600432896.

The previous prime is 664660585066447. The next prime is 664660585066487.

664660585066466 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 664660585066393 and 664660585066402.

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 15 ways as a sum of consecutive naturals, for example, 314035721 + ... + 316145148.

It is an arithmetic number, because the mean of its divisors is an integer number (33553350242280).

Almost surely, 2^{664660585066466} is an apocalyptic number.

664660585066466 is a deficient number, since it is larger than the sum of its proper divisors (409046622686494).

664660585066466 is a wasteful number, since it uses less digits than its factorization.

664660585066466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630181418.

The product of its (nonzero) digits is 5374771200, while the sum is 74.

The spelling of 664660585066466 in words is "six hundred sixty-four trillion, six hundred sixty billion, five hundred eighty-five million, sixty-six thousand, four hundred sixty-six".