6840871 has 2 divisors, whose sum is σ = 6840872. Its totient is φ = 6840870.

The previous prime is 6840857. The next prime is 6840929. The reversal of 6840871 is 1780486.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6840871 - 2⁹ = 6840359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6840811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3420435 + 3420436.

It is an arithmetic number, because the mean of its divisors is an integer number (3420436).

Almost surely, 2^6840871 is an apocalyptic number.

6840871 is a deficient number, since it is larger than the sum of its proper divisors (1).

6840871 is an equidigital number, since it uses as much as digits as its factorization.

6840871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 6840871 is about 2615.5058784105. The cubic root of 6840871 is about 189.8324561798.

The spelling of 6840871 in words is "six million, eight hundred forty thousand, eight hundred seventy-one".