668852 has 6 divisors (see below), whose sum is σ = 1170498. Its totient is φ = 334424.

The previous prime is 668851. The next prime is 668867. The reversal of 668852 is 258866.

It can be written as a sum of positive squares in only one way, i.e., 630436 + 38416 = 794^2 + 196^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83603 + ... + 83610.

It is an arithmetic number, because the mean of its divisors is an integer number (195083).

2⁶⁶⁸⁸⁵² is an apocalyptic number.

It is an amenable number.

668852 is a deficient number, since it is larger than the sum of its proper divisors (501646).

668852 is a wasteful number, since it uses less digits than its factorization.

668852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167217 (or 167215 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 668852 is about 817.8337239317. The cubic root of 668852 is about 87.4533955900.

The spelling of 668852 in words is "six hundred sixty-eight thousand, eight hundred fifty-two".