6856459 has 2 divisors, whose sum is σ = 6856460. Its totient is φ = 6856458.

The previous prime is 6856429. The next prime is 6856463. The reversal of 6856459 is 9546586.

6856459 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6856459 is a prime.

It is a super-2 number, since 2×6856459² = 94022060037362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6856429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3428229 + 3428230.

It is an arithmetic number, because the mean of its divisors is an integer number (3428230).

Almost surely, 2^6856459 is an apocalyptic number.

6856459 is a deficient number, since it is larger than the sum of its proper divisors (1).

6856459 is an equidigital number, since it uses as much as digits as its factorization.

6856459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 43.

The square root of 6856459 is about 2618.4841034461. The cubic root of 6856459 is about 189.9765344982.

The spelling of 6856459 in words is "six million, eight hundred fifty-six thousand, four hundred fifty-nine".