6668256 has 48 divisors (see below), whose sum is σ = 20006784. Its totient is φ = 1905024.

The previous prime is 6668237. The next prime is 6668257. The reversal of 6668256 is 6528666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668257) 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, 4290 + ... + 5633.

It is an arithmetic number, because the mean of its divisors is an integer number (416808).

Almost surely, 2^6668256 is an apocalyptic number.

It is an amenable number.

6668256 is an abundant number, since it is smaller than the sum of its proper divisors (13338528).

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

6668256 is a wasteful number, since it uses less digits than its factorization.

6668256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9943 (or 9935 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 6668256 is about 2582.2966522071. The cubic root of 6668256 is about 188.2221607871. Note that the first 3 decimals are identical.

The spelling of 6668256 in words is "six million, six hundred sixty-eight thousand, two hundred fifty-six".