6857743 has 2 divisors, whose sum is σ = 6857744. Its totient is φ = 6857742.

The previous prime is 6857729. The next prime is 6857759. The reversal of 6857743 is 3477586.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6857743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6857696 and 6857705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6857713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3428871 + 3428872.

It is an arithmetic number, because the mean of its divisors is an integer number (3428872).

Almost surely, 2^6857743 is an apocalyptic number.

6857743 is a deficient number, since it is larger than the sum of its proper divisors (1).

6857743 is an equidigital number, since it uses as much as digits as its factorization.

6857743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 40.

The square root of 6857743 is about 2618.7292719943. The cubic root of 6857743 is about 189.9883926427.

The spelling of 6857743 in words is "six million, eight hundred fifty-seven thousand, seven hundred forty-three".