6986171 has 2 divisors, whose sum is σ = 6986172. Its totient is φ = 6986170.

The previous prime is 6986123. The next prime is 6986197. The reversal of 6986171 is 1716896.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6986171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6986101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3493085 + 3493086.

It is an arithmetic number, because the mean of its divisors is an integer number (3493086).

Almost surely, 2^6986171 is an apocalyptic number.

6986171 is a deficient number, since it is larger than the sum of its proper divisors (1).

6986171 is an equidigital number, since it uses as much as digits as its factorization.

6986171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 38.

The square root of 6986171 is about 2643.1365836823. The cubic root of 6986171 is about 191.1670641581.

The spelling of 6986171 in words is "six million, nine hundred eighty-six thousand, one hundred seventy-one".