395665715 has 8 divisors (see below), whose sum is σ = 474919200. Its totient is φ = 316452352.

The previous prime is 395665687. The next prime is 395665729. The reversal of 395665715 is 517566593.

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 395665715 - 2¹⁰ = 395664691 is a prime.

It is a super-2 number, since 2×395665715² = 313102716052922450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 395665715.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19667 + ... + 34323.

It is an arithmetic number, because the mean of its divisors is an integer number (59364900).

Almost surely, 2^395665715 is an apocalyptic number.

395665715 is a deficient number, since it is larger than the sum of its proper divisors (79253485).

395665715 is a wasteful number, since it uses less digits than its factorization.

395665715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20061.

The product of its digits is 850500, while the sum is 47.

The square root of 395665715 is about 19891.3477421717. The cubic root of 395665715 is about 734.1353554327.

The spelling of 395665715 in words is "three hundred ninety-five million, six hundred sixty-five thousand, seven hundred fifteen".