396564365 has 4 divisors (see below), whose sum is σ = 475877244. Its totient is φ = 317251488.

The previous prime is 396564353. The next prime is 396564449. The reversal of 396564365 is 563465693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 563465693 = 7 ⋅80495099.

It can be written as a sum of positive squares in 2 ways, for example, as 115197289 + 281367076 = 10733^2 + 16774^2 .

It is a cyclic number.

It is not a de Polignac number, because 396564365 - 2¹⁰ = 396563341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39656432 + ... + 39656441.

It is an arithmetic number, because the mean of its divisors is an integer number (118969311).

Almost surely, 2^396564365 is an apocalyptic number.

It is an amenable number.

396564365 is a deficient number, since it is larger than the sum of its proper divisors (79312879).

396564365 is an equidigital number, since it uses as much as digits as its factorization.

396564365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79312878.

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

The square root of 396564365 is about 19913.9238976150. The cubic root of 396564365 is about 734.6907332626.

The spelling of 396564365 in words is "three hundred ninety-six million, five hundred sixty-four thousand, three hundred sixty-five".