663396 has 24 divisors (see below), whose sum is σ = 1575840. Its totient is φ = 217152.

The previous prime is 663371. The next prime is 663407. The reversal of 663396 is 693366.

663396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

663396 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, 240 + ... + 1176.

It is an arithmetic number, because the mean of its divisors is an integer number (65660).

2⁶⁶³³⁹⁶ is an apocalyptic number.

It is an amenable number.

663396 is an abundant number, since it is smaller than the sum of its proper divisors (912444).

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

663396 is a wasteful number, since it uses less digits than its factorization.

663396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003 (or 1001 counting only the distinct ones).

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

The square root of 663396 is about 814.4912522551. The cubic root of 663396 is about 87.2149526865.

The spelling of 663396 in words is "six hundred sixty-three thousand, three hundred ninety-six".