6918304663 has 2 divisors, whose sum is σ = 6918304664. Its totient is φ = 6918304662.

The previous prime is 6918304661. The next prime is 6918304669. The reversal of 6918304663 is 3664038196.

6918304663 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 6918304663 - 2¹ = 6918304661 is a prime.

Together with 6918304661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6918304661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3459152331 + 3459152332.

It is an arithmetic number, because the mean of its divisors is an integer number (3459152332).

Almost surely, 2^6918304663 is an apocalyptic number.

6918304663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6918304663 is an equidigital number, since it uses as much as digits as its factorization.

6918304663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 46.

The square root of 6918304663 is about 83176.3467759916. The cubic root of 6918304663 is about 1905.4602546845.

The spelling of 6918304663 in words is "six billion, nine hundred eighteen million, three hundred four thousand, six hundred sixty-three".