660323 has 4 divisors (see below), whose sum is σ = 664848. Its totient is φ = 655800.

The previous prime is 660299. The next prime is 660329. The reversal of 660323 is 323066.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 660323 - 2⁸ = 660067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 660295 and 660304.

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 3 ways as a sum of consecutive naturals, for example, 2036 + ... + 2337.

It is an arithmetic number, because the mean of its divisors is an integer number (166212).

2⁶⁶⁰³²³ is an apocalyptic number.

660323 is a deficient number, since it is larger than the sum of its proper divisors (4525).

660323 is a wasteful number, since it uses less digits than its factorization.

660323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4524.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 660323 is about 812.6026089055. The cubic root of 660323 is about 87.0800777662.

Adding to 660323 its reverse (323066), we get a palindrome (983389).

The spelling of 660323 in words is "six hundred sixty thousand, three hundred twenty-three".