6345663257 has 2 divisors, whose sum is σ = 6345663258. Its totient is φ = 6345663256.

The previous prime is 6345663241. The next prime is 6345663293. The reversal of 6345663257 is 7523665436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5342294281 + 1003368976 = 73091^2 + 31676^2 .

It is a cyclic number.

It is not a de Polignac number, because 6345663257 - 2⁴ = 6345663241 is a prime.

It is not a weakly prime, because it can be changed into another prime (6345663227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3172831628 + 3172831629.

It is an arithmetic number, because the mean of its divisors is an integer number (3172831629).

Almost surely, 2^6345663257 is an apocalyptic number.

It is an amenable number.

6345663257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6345663257 is an equidigital number, since it uses as much as digits as its factorization.

6345663257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 47.

The square root of 6345663257 is about 79659.6714592773. The cubic root of 6345663257 is about 1851.3662424852.

The spelling of 6345663257 in words is "six billion, three hundred forty-five million, six hundred sixty-three thousand, two hundred fifty-seven".