663468 has 24 divisors (see below), whose sum is σ = 1667568. Its totient is φ = 204096.

The previous prime is 663463. The next prime is 663517. The reversal of 663468 is 864366.

It is a nialpdrome in base 7.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 663468.

It is not an unprimeable number, because it can be changed into a prime (663463) by changing a digit.

663468 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1971 + ... + 2282.

It is an arithmetic number, because the mean of its divisors is an integer number (69482).

2⁶⁶³⁴⁶⁸ is an apocalyptic number.

It is an amenable number.

663468 is an abundant number, since it is smaller than the sum of its proper divisors (1004100).

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

663468 is a wasteful number, since it uses less digits than its factorization.

663468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273 (or 4271 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 663468 is about 814.5354504256. The cubic root of 663468 is about 87.2181077902.

The spelling of 663468 in words is "six hundred sixty-three thousand, four hundred sixty-eight".