6857471 has 2 divisors, whose sum is σ = 6857472. Its totient is φ = 6857470.

The previous prime is 6857467. The next prime is 6857489. The reversal of 6857471 is 1747586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6857471 - 2² = 6857467 is a prime.

It is a super-3 number, since 3×6857471³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6857671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3428735 + 3428736.

It is an arithmetic number, because the mean of its divisors is an integer number (3428736).

Almost surely, 2^6857471 is an apocalyptic number.

6857471 is a deficient number, since it is larger than the sum of its proper divisors (1).

6857471 is an equidigital number, since it uses as much as digits as its factorization.

6857471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 38.

The square root of 6857471 is about 2618.6773378941. The cubic root of 6857471 is about 189.9858807606.

The spelling of 6857471 in words is "six million, eight hundred fifty-seven thousand, four hundred seventy-one".