660822 has 16 divisors (see below), whose sum is σ = 1330032. Its totient is φ = 218880.

The previous prime is 660817. The next prime is 660833. The reversal of 660822 is 228066.

It is a junction number, because it is equal to n+sod(n) for n = 660792 and 660801.

It is a congruent number.

It is an unprimeable number.

660822 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218 + ... + 1674.

It is an arithmetic number, because the mean of its divisors is an integer number (83127).

2⁶⁶⁰⁸²² is an apocalyptic number.

660822 is an abundant number, since it is smaller than the sum of its proper divisors (669210).

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

660822 is a wasteful number, since it uses less digits than its factorization.

660822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 660822 is about 812.9095890688. The cubic root of 660822 is about 87.1020074470.

Adding to 660822 its reverse (228066), we get a palindrome (888888).

The spelling of 660822 in words is "six hundred sixty thousand, eight hundred twenty-two".