6641968 has 20 divisors (see below), whose sum is σ = 13626360. Its totient is φ = 3125504.

The previous prime is 6641953. The next prime is 6641969. The reversal of 6641968 is 8691466.

It is a self number, because there is not a number n which added to its sum of digits gives 6641968.

It is not an unprimeable number, because it can be changed into a prime (6641969) 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, 11938 + ... + 12481.

It is an arithmetic number, because the mean of its divisors is an integer number (681318).

Almost surely, 2^6641968 is an apocalyptic number.

6641968 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6641968 is an abundant number, since it is smaller than the sum of its proper divisors (6984392).

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

6641968 is a wasteful number, since it uses less digits than its factorization.

6641968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24444 (or 24438 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 6641968 is about 2577.2015831130. The cubic root of 6641968 is about 187.9744948046.

The spelling of 6641968 in words is "six million, six hundred forty-one thousand, nine hundred sixty-eight".