6396857 has 2 divisors, whose sum is σ = 6396858. Its totient is φ = 6396856.

The previous prime is 6396853. The next prime is 6396869. The reversal of 6396857 is 7586936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3671056 + 2725801 = 1916^2 + 1651^2 .

It is a cyclic number.

It is not a de Polignac number, because 6396857 - 2² = 6396853 is a prime.

It is a super-3 number, since 3×6396857³ (a number of 21 digits) contains 333 as substring.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (6396851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3198428 + 3198429.

It is an arithmetic number, because the mean of its divisors is an integer number (3198429).

Almost surely, 2^6396857 is an apocalyptic number.

It is an amenable number.

6396857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6396857 is an equidigital number, since it uses as much as digits as its factorization.

6396857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 6396857 is about 2529.2008619325. The cubic root of 6396857 is about 185.6331556310.

The spelling of 6396857 in words is "six million, three hundred ninety-six thousand, eight hundred fifty-seven".