664926298297 has 4 divisors (see below), whose sum is σ = 699922419280. Its totient is φ = 629930177316.

The previous prime is 664926298291. The next prime is 664926298307. The reversal of 664926298297 is 792892629466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664926298297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664926298291) by changing a digit.

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, 17498060463 + ... + 17498060500.

It is an arithmetic number, because the mean of its divisors is an integer number (174980604820).

Almost surely, 2^664926298297 is an apocalyptic number.

It is an amenable number.

664926298297 is a deficient number, since it is larger than the sum of its proper divisors (34996120983).

664926298297 is a wasteful number, since it uses less digits than its factorization.

664926298297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34996120982.

The product of its digits is 282175488, while the sum is 70.

The spelling of 664926298297 in words is "six hundred sixty-four billion, nine hundred twenty-six million, two hundred ninety-eight thousand, two hundred ninety-seven".