665346395 has 16 divisors (see below), whose sum is σ = 937138368. Its totient is φ = 443905920.

The previous prime is 665346359. The next prime is 665346403. The reversal of 665346395 is 593643566.

665346395 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 665346395 - 2¹⁶ = 665280859 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255596 + ... + 258185.

It is an arithmetic number, because the mean of its divisors is an integer number (58571148).

Almost surely, 2^665346395 is an apocalyptic number.

665346395 is a deficient number, since it is larger than the sum of its proper divisors (271791973).

665346395 is a wasteful number, since it uses less digits than its factorization.

665346395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513830.

The product of its digits is 1749600, while the sum is 47.

The square root of 665346395 is about 25794.3093530337. The cubic root of 665346395 is about 873.0034018605.

The spelling of 665346395 in words is "six hundred sixty-five million, three hundred forty-six thousand, three hundred ninety-five".