395666666593 has 8 divisors (see below), whose sum is σ = 431717914080. Its totient is φ = 359629010880.

The previous prime is 395666666561. The next prime is 395666666597.

It is a happy number.

395666666593 is nontrivially palindromic in base 10.

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 395666666593 - 2⁵ = 395666666561 is a prime.

It is a super-2 number, since 2×395666666593² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395666666597) 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, 3337023 + ... + 3453556.

It is an arithmetic number, because the mean of its divisors is an integer number (53964739260).

Almost surely, 2^395666666593 is an apocalyptic number.

It is an amenable number.

395666666593 is a deficient number, since it is larger than the sum of its proper divisors (36051247487).

395666666593 is a wasteful number, since it uses less digits than its factorization.

395666666593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6795887.

The product of its digits is 850305600, while the sum is 70.

The spelling of 395666666593 in words is "three hundred ninety-five billion, six hundred sixty-six million, six hundred sixty-six thousand, five hundred ninety-three".