6845208563 has 2 divisors, whose sum is σ = 6845208564. Its totient is φ = 6845208562.

The previous prime is 6845208551. The next prime is 6845208581. The reversal of 6845208563 is 3658025486.

6845208563 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6845208563 - 2⁶ = 6845208499 is a prime.

It is not a weakly prime, because it can be changed into another prime (6845208863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3422604281 + 3422604282.

It is an arithmetic number, because the mean of its divisors is an integer number (3422604282).

Almost surely, 2^6845208563 is an apocalyptic number.

6845208563 is a deficient number, since it is larger than the sum of its proper divisors (1).

6845208563 is an equidigital number, since it uses as much as digits as its factorization.

6845208563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 47.

The square root of 6845208563 is about 82735.7755931495. The cubic root of 6845208563 is about 1898.7256979824.

The spelling of 6845208563 in words is "six billion, eight hundred forty-five million, two hundred eight thousand, five hundred sixty-three".