6789641 has 4 divisors (see below), whose sum is σ = 6955284. Its totient is φ = 6624000.

The previous prime is 6789637. The next prime is 6789701. The reversal of 6789641 is 1469876.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2805625 + 3984016 = 1675^2 + 1996^2 .

It is a cyclic number.

It is not a de Polignac number, because 6789641 - 2² = 6789637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 165601 = 6789641 / (6 + 7 + 8 + 9 + 6 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6789941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82760 + ... + 82841.

It is an arithmetic number, because the mean of its divisors is an integer number (1738821).

Almost surely, 2^6789641 is an apocalyptic number.

It is an amenable number.

6789641 is a deficient number, since it is larger than the sum of its proper divisors (165643).

6789641 is a wasteful number, since it uses less digits than its factorization.

6789641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165642.

The product of its digits is 72576, while the sum is 41.

The square root of 6789641 is about 2605.6939574708. The cubic root of 6789641 is about 189.3573950965.

The spelling of 6789641 in words is "six million, seven hundred eighty-nine thousand, six hundred forty-one".