669132 has 18 divisors (see below), whose sum is σ = 1691508. Its totient is φ = 223032.

The previous prime is 669127. The next prime is 669133. The reversal of 669132 is 231966.

It is a happy number.

669132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

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 = 669096 and 669105.

It is not an unprimeable number, because it can be changed into a prime (669133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9258 + ... + 9329.

2⁶⁶⁹¹³² is an apocalyptic number.

It is an amenable number.

669132 is an abundant number, since it is smaller than the sum of its proper divisors (1022376).

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

669132 is a wasteful number, since it uses less digits than its factorization.

669132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18597 (or 18592 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 669132 is about 818.0048899609. The cubic root of 669132 is about 87.4655973599.

The spelling of 669132 in words is "six hundred sixty-nine thousand, one hundred thirty-two".