395830665 has 32 divisors (see below), whose sum is σ = 704586240. Its totient is φ = 210843648.

The previous prime is 395830649. The next prime is 395830681. The reversal of 395830665 is 566038593.

395830665 is a `hidden beast` number, since 3 + 9 + 583 + 0 + 6 + 65 = 666.

It is an interprime number because it is at equal distance from previous prime (395830649) and next prime (395830681).

It is not a de Polignac number, because 395830665 - 2⁴ = 395830649 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 395830665.

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, 154384 + ... + 156926.

It is an arithmetic number, because the mean of its divisors is an integer number (22018320).

Almost surely, 2^395830665 is an apocalyptic number.

It is an amenable number.

395830665 is a deficient number, since it is larger than the sum of its proper divisors (308755575).

395830665 is a wasteful number, since it uses less digits than its factorization.

395830665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710 (or 3704 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 395830665 is about 19895.4935852318. The cubic root of 395830665 is about 734.2373597242.

It can be divided in two parts, 395830 and 665, that added together give a triangular number (396495 = T₈₉₀).

The spelling of 395830665 in words is "three hundred ninety-five million, eight hundred thirty thousand, six hundred sixty-five".