396684 has 24 divisors (see below), whose sum is σ = 1028720. Its totient is φ = 132192.

The previous prime is 396679. The next prime is 396703. The reversal of 396684 is 486693.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

396684 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1729 + ... + 1944.

2³⁹⁶⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

396684 is an abundant number, since it is smaller than the sum of its proper divisors (632036).

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

396684 is a wasteful number, since it uses less digits than its factorization.

396684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686 (or 3678 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 396684 is about 629.8285480986. The cubic root of 396684 is about 73.4764606003.

Subtracting 396684 from its reverse (486693), we obtain a palindrome (90009).

The spelling of 396684 in words is "three hundred ninety-six thousand, six hundred eighty-four".