664653506882 has 4 divisors (see below), whose sum is σ = 996980260326. Its totient is φ = 332326753440.

The previous prime is 664653506849. The next prime is 664653506897. The reversal of 664653506882 is 288605356466.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 631263619441 + 33389887441 = 794521^2 + 182729^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166163376719 + ... + 166163376722.

Almost surely, 2^664653506882 is an apocalyptic number.

664653506882 is a deficient number, since it is larger than the sum of its proper divisors (332326753444).

664653506882 is a wasteful number, since it uses less digits than its factorization.

664653506882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332326753443.

The product of its (nonzero) digits is 49766400, while the sum is 59.

The spelling of 664653506882 in words is "six hundred sixty-four billion, six hundred fifty-three million, five hundred six thousand, eight hundred eighty-two".