664938835201 has 8 divisors (see below), whose sum is σ = 670110765984. Its totient is φ = 659768360160.

The previous prime is 664938835139. The next prime is 664938835247. The reversal of 664938835201 is 102538839466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 664938835201 - 2³¹ = 662791351553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664938836201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562285 + ... + 1282981.

It is an arithmetic number, because the mean of its divisors is an integer number (83763845748).

Almost surely, 2^664938835201 is an apocalyptic number.

It is an amenable number.

664938835201 is a deficient number, since it is larger than the sum of its proper divisors (5171930783).

664938835201 is a wasteful number, since it uses less digits than its factorization.

664938835201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727871.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 664938835201 in words is "six hundred sixty-four billion, nine hundred thirty-eight million, eight hundred thirty-five thousand, two hundred one".