6681845 has 16 divisors (see below), whose sum is σ = 8467200. Its totient is φ = 5051904.

The previous prime is 6681839. The next prime is 6681847. The reversal of 6681845 is 5481866.

6681845 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6681845 - 2⁶ = 6681781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6681799 and 6681808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10856 + ... + 11454.

It is an arithmetic number, because the mean of its divisors is an integer number (529200).

Almost surely, 2^6681845 is an apocalyptic number.

It is an amenable number.

6681845 is a deficient number, since it is larger than the sum of its proper divisors (1785355).

6681845 is a wasteful number, since it uses less digits than its factorization.

6681845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724.

The product of its digits is 46080, while the sum is 38.

The square root of 6681845 is about 2584.9264979879. The cubic root of 6681845 is about 188.3499310996.

The spelling of 6681845 in words is "six million, six hundred eighty-one thousand, eight hundred forty-five".