660324 has 36 divisors (see below), whose sum is σ = 1793904. Its totient is φ = 188496.

The previous prime is 660299. The next prime is 660329. The reversal of 660324 is 423066.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 660324.

It is not an unprimeable number, because it can be changed into a prime (660329) 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, 27 + ... + 1149.

2⁶⁶⁰³²⁴ 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 660324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (896952).

660324 is an abundant number, since it is smaller than the sum of its proper divisors (1133580).

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

660324 is a wasteful number, since it uses less digits than its factorization.

660324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144 (or 1135 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 660324 is about 812.6032242122. The cubic root of 660324 is about 87.0801217245.

The spelling of 660324 in words is "six hundred sixty thousand, three hundred twenty-four".