668532 has 12 divisors (see below), whose sum is σ = 1559936. Its totient is φ = 222840.

The previous prime is 668531. The next prime is 668533. The reversal of 668532 is 235866.

668532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (668531) and next prime (668533).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 668532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27844 + ... + 27867.

2⁶⁶⁸⁵³² is an apocalyptic number.

It is an amenable number.

668532 is an abundant number, since it is smaller than the sum of its proper divisors (891404).

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

668532 is a wasteful number, since it uses less digits than its factorization.

668532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55718 (or 55716 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 668532 is about 817.6380617364. The cubic root of 668532 is about 87.4394465397.

The spelling of 668532 in words is "six hundred sixty-eight thousand, five hundred thirty-two".