6398347057 has 2 divisors, whose sum is σ = 6398347058. Its totient is φ = 6398347056.

The previous prime is 6398347027. The next prime is 6398347073. The reversal of 6398347057 is 7507438936.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6361817121 + 36529936 = 79761^2 + 6044^2 .

It is a cyclic number.

It is not a de Polignac number, because 6398347057 - 2²⁷ = 6264129329 is a prime.

It is a super-2 number, since 2×6398347057² = 81877690123641122498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6398346995 and 6398347013.

It is not a weakly prime, because it can be changed into another prime (6398347027) 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, 3199173528 + 3199173529.

It is an arithmetic number, because the mean of its divisors is an integer number (3199173529).

Almost surely, 2^6398347057 is an apocalyptic number.

It is an amenable number.

6398347057 is a deficient number, since it is larger than the sum of its proper divisors (1).

6398347057 is an equidigital number, since it uses as much as digits as its factorization.

6398347057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The square root of 6398347057 is about 79989.6684391178. The cubic root of 6398347057 is about 1856.4756804789.

The spelling of 6398347057 in words is "six billion, three hundred ninety-eight million, three hundred forty-seven thousand, fifty-seven".