386956635665 has 8 divisors (see below), whose sum is σ = 466913422248. Its totient is φ = 307855002240.

The previous prime is 386956635647. The next prime is 386956635727. The reversal of 386956635665 is 566536659683.

It can be written as a sum of positive squares in 4 ways, for example, as 2318518801 + 384638116864 = 48151^2 + 620192^2 .

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

It is not a de Polignac number, because 386956635665 - 2⁶ = 386956635601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 386956635595 and 386956635604.

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 7 ways as a sum of consecutive naturals, for example, 213787292 + ... + 213789101.

It is an arithmetic number, because the mean of its divisors is an integer number (58364177781).

Almost surely, 2^386956635665 is an apocalyptic number.

It is an amenable number.

386956635665 is a deficient number, since it is larger than the sum of its proper divisors (79956786583).

386956635665 is a wasteful number, since it uses less digits than its factorization.

386956635665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427576579.

The product of its digits is 629856000, while the sum is 68.

The spelling of 386956635665 in words is "three hundred eighty-six billion, nine hundred fifty-six million, six hundred thirty-five thousand, six hundred sixty-five".