396685 has 4 divisors (see below), whose sum is σ = 476028. Its totient is φ = 317344.

The previous prime is 396679. The next prime is 396703. The reversal of 396685 is 586693.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86436 + 310249 = 294^2 + 557^2 .

It is a cyclic number.

It is not a de Polignac number, because 396685 - 2⁹ = 396173 is a prime.

It is a Duffinian 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, 39664 + ... + 39673.

It is an arithmetic number, because the mean of its divisors is an integer number (119007).

2³⁹⁶⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

396685 is a deficient number, since it is larger than the sum of its proper divisors (79343).

396685 is an equidigital number, since it uses as much as digits as its factorization.

396685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79342.

The product of its digits is 38880, while the sum is 37.

The square root of 396685 is about 629.8293419649. The cubic root of 396685 is about 73.4765223424.

It can be divided in two parts, 396 and 685, that added together give a triangular number (1081 = T₄₆).

The spelling of 396685 in words is "three hundred ninety-six thousand, six hundred eighty-five".