668232 has 24 divisors (see below), whose sum is σ = 1809990. Its totient is φ = 222720.

The previous prime is 668221. The next prime is 668243. The reversal of 668232 is 232866.

It is an interprime number because it is at equal distance from previous prime (668221) and next prime (668243).

It can be written as a sum of positive squares in only one way, i.e., 443556 + 224676 = 666^2 + 474^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a junction number, because it is equal to n+sod(n) for n = 668196 and 668205.

It is a congruent number.

It is an unprimeable number.

668232 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 (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4569 + ... + 4712.

2⁶⁶⁸²³² is an apocalyptic number.

It is an amenable number.

668232 is an abundant number, since it is smaller than the sum of its proper divisors (1141758).

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

668232 is a wasteful number, since it uses less digits than its factorization.

668232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9293 (or 9286 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 668232 is about 817.4545858945. The cubic root of 668232 is about 87.4263652617.

It can be divided in two parts, 668 and 232, that added together give a square (900 = 30²).

The spelling of 668232 in words is "six hundred sixty-eight thousand, two hundred thirty-two".