6457859 has 2 divisors, whose sum is σ = 6457860. Its totient is φ = 6457858.

The previous prime is 6457831. The next prime is 6457861. The reversal of 6457859 is 9587546.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6457859 is a prime.

Together with 6457861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6457879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3228929 + 3228930.

It is an arithmetic number, because the mean of its divisors is an integer number (3228930).

Almost surely, 2^6457859 is an apocalyptic number.

6457859 is a deficient number, since it is larger than the sum of its proper divisors (1).

6457859 is an equidigital number, since it uses as much as digits as its factorization.

6457859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 44.

The square root of 6457859 is about 2541.2317879328. The cubic root of 6457859 is about 186.2213709130.

The spelling of 6457859 in words is "six million, four hundred fifty-seven thousand, eight hundred fifty-nine".