396565 has 8 divisors (see below), whose sum is σ = 512568. Its totient is φ = 292800.

The previous prime is 396563. The next prime is 396577. The reversal of 396565 is 565693.

It can be written as a sum of positive squares in 4 ways, for example, as 14641 + 381924 = 121^2 + 618^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 396565 - 2¹ = 396563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 396565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2986 + ... + 3115.

It is an arithmetic number, because the mean of its divisors is an integer number (64071).

2³⁹⁶⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

396565 is a deficient number, since it is larger than the sum of its proper divisors (116003).

396565 is a wasteful number, since it uses less digits than its factorization.

396565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6119.

The product of its digits is 24300, while the sum is 34.

The square root of 396565 is about 629.7340708585. The cubic root of 396565 is about 73.4691125404.

It can be divided in two parts, 396 and 565, that added together give a square (961 = 31²).

The spelling of 396565 in words is "three hundred ninety-six thousand, five hundred sixty-five".