664866500884 has 12 divisors (see below), whose sum is σ = 1163749721344. Its totient is φ = 332366580504.

The previous prime is 664866500807. The next prime is 664866500891. The reversal of 664866500884 is 488005668466.

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 3 ways as a sum of consecutive naturals, for example, 16645044 + ... + 16684939.

Almost surely, 2^664866500884 is an apocalyptic number.

It is an amenable number.

664866500884 is a deficient number, since it is larger than the sum of its proper divisors (498883220460).

664866500884 is a wasteful number, since it uses less digits than its factorization.

664866500884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33334974 (or 33334972 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 61.

The spelling of 664866500884 in words is "six hundred sixty-four billion, eight hundred sixty-six million, five hundred thousand, eight hundred eighty-four".