669324 has 36 divisors (see below), whose sum is σ = 1667624. Its totient is φ = 208896.

The previous prime is 669311. The next prime is 669329. The reversal of 669324 is 423966.

It is an Ulam number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 669291 and 669300.

It is not an unprimeable number, because it can be changed into a prime (669329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3372 + ... + 3564.

2⁶⁶⁹³²⁴ 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 669324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833812).

669324 is an abundant number, since it is smaller than the sum of its proper divisors (998300).

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

669324 is a wasteful number, since it uses less digits than its factorization.

669324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 215 counting only the distinct ones).

The product of its digits is 7776, while the sum is 30.

The square root of 669324 is about 818.1222402551. The cubic root of 669324 is about 87.4739623207.

The spelling of 669324 in words is "six hundred sixty-nine thousand, three hundred twenty-four".