664577917113 has 16 divisors (see below), whose sum is σ = 966672536256. Its totient is φ = 402768767040.

The previous prime is 664577917093. The next prime is 664577917123. The reversal of 664577917113 is 311719775466.

It is not a de Polignac number, because 664577917113 - 2¹⁰ = 664577916089 is a prime.

It is a super-4 number, since 4×664577917113⁴ (a number of 48 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (664577917123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4010695 + ... + 4173107.

It is an arithmetic number, because the mean of its divisors is an integer number (60417033516).

Almost surely, 2^664577917113 is an apocalyptic number.

It is an amenable number.

664577917113 is a deficient number, since it is larger than the sum of its proper divisors (302094619143).

664577917113 is a wasteful number, since it uses less digits than its factorization.

664577917113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286424.

The product of its digits is 6667920, while the sum is 57.

The spelling of 664577917113 in words is "six hundred sixty-four billion, five hundred seventy-seven million, nine hundred seventeen thousand, one hundred thirteen".