806870171 has 2 divisors, whose sum is σ = 806870172. Its totient is φ = 806870170.

The previous prime is 806870143. The next prime is 806870179. The reversal of 806870171 is 171078608.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806870171 is a prime.

It is equal to p_41481569 and since 806870171 and 41481569 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (806870179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403435085 + 403435086.

It is an arithmetic number, because the mean of its divisors is an integer number (403435086).

Almost surely, 2^806870171 is an apocalyptic number.

806870171 is a deficient number, since it is larger than the sum of its proper divisors (1).

806870171 is an equidigital number, since it uses as much as digits as its factorization.

806870171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 806870171 is about 28405.4602321455. The cubic root of 806870171 is about 930.9675716308.

The spelling of 806870171 in words is "eight hundred six million, eight hundred seventy thousand, one hundred seventy-one".