666848 has 48 divisors (see below), whose sum is σ = 1622880. Its totient is φ = 262656.

The previous prime is 666829. The next prime is 666857. The reversal of 666848 is 848666.

It is a congruent number.

It is an unprimeable number.

666848 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, 2798 + ... + 3026.

It is an arithmetic number, because the mean of its divisors is an integer number (33810).

2⁶⁶⁶⁸⁴⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (811440).

666848 is an abundant number, since it is smaller than the sum of its proper divisors (956032).

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

666848 is a wasteful number, since it uses less digits than its factorization.

666848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 251 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 666848 is about 816.6076169128. The cubic root of 666848 is about 87.3659662185.

The spelling of 666848 in words is "six hundred sixty-six thousand, eight hundred forty-eight".