660322 has 16 divisors (see below), whose sum is σ = 1081080. Its totient is φ = 300672.

The previous prime is 660299. The next prime is 660329. The reversal of 660322 is 223066.

It can be written as a sum of positive squares in 4 ways, for example, as 421201 + 239121 = 649^2 + 489^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 660322.

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 7 ways as a sum of consecutive naturals, for example, 2718 + ... + 2950.

2⁶⁶⁰³²² is an apocalyptic number.

660322 is a deficient number, since it is larger than the sum of its proper divisors (420758).

660322 is a wasteful number, since it uses less digits than its factorization.

660322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 660322 is about 812.6019935983. The cubic root of 660322 is about 87.0800338079.

Adding to 660322 its reverse (223066), we get a palindrome (883388).

The spelling of 660322 in words is "six hundred sixty thousand, three hundred twenty-two".