666852 has 24 divisors (see below), whose sum is σ = 1583232. Its totient is φ = 218400.

The previous prime is 666829. The next prime is 666857. The reversal of 666852 is 258666.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666857) 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, 277 + ... + 1187.

It is an arithmetic number, because the mean of its divisors is an integer number (65968).

2⁶⁶⁶⁸⁵² is an apocalyptic number.

It is an amenable number.

666852 is an abundant number, since it is smaller than the sum of its proper divisors (916380).

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

666852 is a wasteful number, since it uses less digits than its factorization.

666852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979 (or 977 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 666852 is about 816.6100660658. The cubic root of 666852 is about 87.3661409026.

The spelling of 666852 in words is "six hundred sixty-six thousand, eight hundred fifty-two".