663336 has 64 divisors (see below), whose sum is σ = 1915200. Its totient is φ = 212544.

The previous prime is 663331. The next prime is 663349. The reversal of 663336 is 633366.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (663331) by changing a digit.

663336 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 15 ways as a sum of consecutive naturals, for example, 7951 + ... + 8033.

It is an arithmetic number, because the mean of its divisors is an integer number (29925).

2⁶⁶³³³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (957600).

663336 is an abundant number, since it is smaller than the sum of its proper divisors (1251864).

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

663336 is a wasteful number, since it uses less digits than its factorization.

663336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 125 counting only the distinct ones).

The product of its digits is 5832, while the sum is 27.

The square root of 663336 is about 814.4544186141. The cubic root of 663336 is about 87.2123232591.

It can be divided in two parts, 663 and 336, that added together give a palindrome (999).

The spelling of 663336 in words is "six hundred sixty-three thousand, three hundred thirty-six".