6783641 has 2 divisors, whose sum is σ = 6783642. Its totient is φ = 6783640.

The previous prime is 6783619. The next prime is 6783653. The reversal of 6783641 is 1463876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5900041 + 883600 = 2429^2 + 940^2 .

It is a cyclic number.

It is not a de Polignac number, because 6783641 - 2¹⁸ = 6521497 is a prime.

It is a zygodrome in base 7.

It is not a weakly prime, because it can be changed into another prime (6783611) 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 as a sum of consecutive naturals, namely, 3391820 + 3391821.

It is an arithmetic number, because the mean of its divisors is an integer number (3391821).

Almost surely, 2^6783641 is an apocalyptic number.

It is an amenable number.

6783641 is a deficient number, since it is larger than the sum of its proper divisors (1).

6783641 is an equidigital number, since it uses as much as digits as its factorization.

6783641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 6783641 is about 2604.5423782308. The cubic root of 6783641 is about 189.3016003348.

The spelling of 6783641 in words is "six million, seven hundred eighty-three thousand, six hundred forty-one".