660922 has 8 divisors (see below), whose sum is σ = 995796. Its totient is φ = 328992.

The previous prime is 660917. The next prime is 660923. The reversal of 660922 is 229066.

660922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 641601 + 19321 = 801^2 + 139^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (660923) 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, 43 + ... + 1150.

2⁶⁶⁰⁹²² is an apocalyptic number.

660922 is a deficient number, since it is larger than the sum of its proper divisors (334874).

660922 is a wasteful number, since it uses less digits than its factorization.

660922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 660922 is about 812.9710941971. The cubic root of 660922 is about 87.1064008446.

Adding to 660922 its reverse (229066), we get a palindrome (889988).

The spelling of 660922 in words is "six hundred sixty thousand, nine hundred twenty-two".