6347940517 has 2 divisors, whose sum is σ = 6347940518. Its totient is φ = 6347940516.

The previous prime is 6347940493. The next prime is 6347940541. The reversal of 6347940517 is 7150497436.

It is a balanced prime because it is at equal distance from previous prime (6347940493) and next prime (6347940541).

It can be written as a sum of positive squares in only one way, i.e., 6183305956 + 164634561 = 78634^2 + 12831^2 .

It is a cyclic number.

It is not a de Polignac number, because 6347940517 - 2²³ = 6339551909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6347940017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3173970258 + 3173970259.

It is an arithmetic number, because the mean of its divisors is an integer number (3173970259).

Almost surely, 2^6347940517 is an apocalyptic number.

It is an amenable number.

6347940517 is a deficient number, since it is larger than the sum of its proper divisors (1).

6347940517 is an equidigital number, since it uses as much as digits as its factorization.

6347940517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 6347940517 is about 79673.9638589671. The cubic root of 6347940517 is about 1851.5876818044.

The spelling of 6347940517 in words is "six billion, three hundred forty-seven million, nine hundred forty thousand, five hundred seventeen".