6728405903 has 2 divisors, whose sum is σ = 6728405904. Its totient is φ = 6728405902.

The previous prime is 6728405899. The next prime is 6728405909. The reversal of 6728405903 is 3095048276.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6728405903 - 2² = 6728405899 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6728405909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3364202951 + 3364202952.

It is an arithmetic number, because the mean of its divisors is an integer number (3364202952).

Almost surely, 2^6728405903 is an apocalyptic number.

6728405903 is a deficient number, since it is larger than the sum of its proper divisors (1).

6728405903 is an equidigital number, since it uses as much as digits as its factorization.

6728405903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 6728405903 is about 82026.8608627686. The cubic root of 6728405903 is about 1887.8640991568.

The spelling of 6728405903 in words is "six billion, seven hundred twenty-eight million, four hundred five thousand, nine hundred three".