663232 has 28 divisors (see below), whose sum is σ = 1352296. Its totient is φ = 322560.

The previous prime is 663209. The next prime is 663239. The reversal of 663232 is 232366.

It is a d-powerful number, because it can be written as 6 + 6⁴ + 2¹⁷ + 3² + 3⁸ + 2¹⁹ .

It is not an unprimeable number, because it can be changed into a prime (663239) by changing a digit.

663232 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 3 ways as a sum of consecutive naturals, for example, 2632 + ... + 2872.

2⁶⁶³²³² 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 663232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676148).

663232 is an abundant number, since it is smaller than the sum of its proper divisors (689064).

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

663232 is a wasteful number, since it uses less digits than its factorization.

663232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 286 counting only the distinct ones).

The product of its digits is 1296, while the sum is 22.

The square root of 663232 is about 814.3905696900. The cubic root of 663232 is about 87.2077652092.

Adding to 663232 its reverse (232366), we get a palindrome (895598).

It can be divided in two parts, 66 and 3232, that multiplied together give a palindrome (213312).

The spelling of 663232 in words is "six hundred sixty-three thousand, two hundred thirty-two".