395868660 has 96 divisors (see below), whose sum is σ = 1232122752. Its totient is φ = 94149120.

The previous prime is 395868623. The next prime is 395868677. The reversal of 395868660 is 66868593.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 29322 + ... + 40638.

It is an arithmetic number, because the mean of its divisors is an integer number (12834612).

Almost surely, 2^395868660 is an apocalyptic number.

395868660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 395868660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (616061376).

395868660 is an abundant number, since it is smaller than the sum of its proper divisors (836254092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

395868660 is a wasteful number, since it uses less digits than its factorization.

395868660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11393 (or 11391 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The square root of 395868660 is about 19896.4484267922. The cubic root of 395868660 is about 734.2608516349.

The spelling of 395868660 in words is "three hundred ninety-five million, eight hundred sixty-eight thousand, six hundred sixty".