6681020 has 24 divisors (see below), whose sum is σ = 14515200. Its totient is φ = 2580032.

The previous prime is 6681019. The next prime is 6681023. The reversal of 6681020 is 201866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681023) 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, 5180 + ... + 6339.

It is an arithmetic number, because the mean of its divisors is an integer number (604800).

Almost surely, 2^6681020 is an apocalyptic number.

It is an amenable number.

6681020 is an abundant number, since it is smaller than the sum of its proper divisors (7834180).

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

6681020 is a wasteful number, since it uses less digits than its factorization.

6681020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11557 (or 11555 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 6681020 is about 2584.7669140563. The cubic root of 6681020 is about 188.3421789947.

Adding to 6681020 its reverse (201866), we get a palindrome (6882886).

The spelling of 6681020 in words is "six million, six hundred eighty-one thousand, twenty".