663068 has 36 divisors (see below), whose sum is σ = 1436400. Its totient is φ = 266112.

The previous prime is 663053. The next prime is 663071. The reversal of 663068 is 860366.

It is a nialpdrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 663068.

It is a congruent number.

It is an unprimeable number.

663068 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 11 ways as a sum of consecutive naturals, for example, 3233 + ... + 3431.

It is an arithmetic number, because the mean of its divisors is an integer number (39900).

2⁶⁶³⁰⁶⁸ is an apocalyptic number.

663068 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718200).

663068 is an abundant number, since it is smaller than the sum of its proper divisors (773332).

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

663068 is a wasteful number, since it uses less digits than its factorization.

663068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 663068 is about 814.2898746761. The cubic root of 663068 is about 87.2005765470.

The spelling of 663068 in words is "six hundred sixty-three thousand, sixty-eight".