396636 has 12 divisors (see below), whose sum is σ = 925512. Its totient is φ = 132208.

The previous prime is 396631. The next prime is 396637. The reversal of 396636 is 636693.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 396597 and 396606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16515 + ... + 16538.

It is an arithmetic number, because the mean of its divisors is an integer number (77126).

2³⁹⁶⁶³⁶ is an apocalyptic number.

It is an amenable number.

396636 is an abundant number, since it is smaller than the sum of its proper divisors (528876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

396636 is a wasteful number, since it uses less digits than its factorization.

396636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33060 (or 33058 counting only the distinct ones).

The product of its digits is 17496, while the sum is 33.

The square root of 396636 is about 629.7904413374. The cubic root of 396636 is about 73.4734968538.

The spelling of 396636 in words is "three hundred ninety-six thousand, six hundred thirty-six".