664817682103 has 4 divisors (see below), whose sum is σ = 677361412008. Its totient is φ = 652273952200.

The previous prime is 664817682091. The next prime is 664817682167. The reversal of 664817682103 is 301286718466.

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

It is a cyclic number.

It is not a de Polignac number, because 664817682103 - 2⁵ = 664817682071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664817602103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6271864873 + ... + 6271864978.

It is an arithmetic number, because the mean of its divisors is an integer number (169340353002).

Almost surely, 2^664817682103 is an apocalyptic number.

664817682103 is a deficient number, since it is larger than the sum of its proper divisors (12543729905).

664817682103 is a wasteful number, since it uses less digits than its factorization.

664817682103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12543729904.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 664817682103 in words is "six hundred sixty-four billion, eight hundred seventeen million, six hundred eighty-two thousand, one hundred three".