6397859 has 8 divisors (see below), whose sum is σ = 6910512. Its totient is φ = 5888160.

The previous prime is 6397849. The next prime is 6397871. The reversal of 6397859 is 9587936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6397859 - 2⁴ = 6397843 is a prime.

It is a super-3 number, since 3×6397859³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6397849) 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 in 7 ways as a sum of consecutive naturals, for example, 6329 + ... + 7269.

It is an arithmetic number, because the mean of its divisors is an integer number (863814).

Almost surely, 2^6397859 is an apocalyptic number.

6397859 is a deficient number, since it is larger than the sum of its proper divisors (512653).

6397859 is a wasteful number, since it uses less digits than its factorization.

6397859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477.

The product of its digits is 408240, while the sum is 47.

The square root of 6397859 is about 2529.3989404600. The cubic root of 6397859 is about 185.6428476152.

The spelling of 6397859 in words is "six million, three hundred ninety-seven thousand, eight hundred fifty-nine".