6378475717 has 2 divisors, whose sum is σ = 6378475718. Its totient is φ = 6378475716.

The previous prime is 6378475709. The next prime is 6378475757. The reversal of 6378475717 is 7175748736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4122795681 + 2255680036 = 64209^2 + 47494^2 .

It is a cyclic number.

It is not a de Polignac number, because 6378475717 - 2³ = 6378475709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6378475757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3189237858 + 3189237859.

It is an arithmetic number, because the mean of its divisors is an integer number (3189237859).

Almost surely, 2^6378475717 is an apocalyptic number.

It is an amenable number.

6378475717 is a deficient number, since it is larger than the sum of its proper divisors (1).

6378475717 is an equidigital number, since it uses as much as digits as its factorization.

6378475717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6914880, while the sum is 55.

The square root of 6378475717 is about 79865.3599315748. The cubic root of 6378475717 is about 1854.5518025576.

The spelling of 6378475717 in words is "six billion, three hundred seventy-eight million, four hundred seventy-five thousand, seven hundred seventeen".