6847668 has 72 divisors (see below), whose sum is σ = 18712512. Its totient is φ = 2103552.

The previous prime is 6847663. The next prime is 6847681. The reversal of 6847668 is 8667486.

It is a happy number.

6847668 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

Its product of digits (387072) is a multiple of the sum of its prime divisors (256).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6847663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40921 + ... + 41087.

It is an arithmetic number, because the mean of its divisors is an integer number (259896).

Almost surely, 2^6847668 is an apocalyptic number.

6847668 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6847668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9356256).

6847668 is an abundant number, since it is smaller than the sum of its proper divisors (11864844).

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

6847668 is a wasteful number, since it uses less digits than its factorization.

6847668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 256 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 6847668 is about 2616.8049220376. The cubic root of 6847668 is about 189.8953070508.

The spelling of 6847668 in words is "six million, eight hundred forty-seven thousand, six hundred sixty-eight".