6804103561 has 2 divisors, whose sum is σ = 6804103562. Its totient is φ = 6804103560.

The previous prime is 6804103529. The next prime is 6804103573. The reversal of 6804103561 is 1653014086.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5517518400 + 1286585161 = 74280^2 + 35869^2 .

It is a cyclic number.

It is not a de Polignac number, because 6804103561 - 2⁵ = 6804103529 is a prime.

It is not a weakly prime, because it can be changed into another prime (6804103861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3402051780 + 3402051781.

It is an arithmetic number, because the mean of its divisors is an integer number (3402051781).

Almost surely, 2^6804103561 is an apocalyptic number.

It is an amenable number.

6804103561 is a deficient number, since it is larger than the sum of its proper divisors (1).

6804103561 is an equidigital number, since it uses as much as digits as its factorization.

6804103561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 6804103561 is about 82486.9902530090. The cubic root of 6804103561 is about 1894.9174931299.

The spelling of 6804103561 in words is "six billion, eight hundred four million, one hundred three thousand, five hundred sixty-one".