86078171 has 2 divisors, whose sum is σ = 86078172. Its totient is φ = 86078170.

The previous prime is 86078149. The next prime is 86078203. The reversal of 86078171 is 17187068.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86078171 - 2⁶ = 86078107 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86078141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43039085 + 43039086.

It is an arithmetic number, because the mean of its divisors is an integer number (43039086).

Almost surely, 2^86078171 is an apocalyptic number.

86078171 is a deficient number, since it is larger than the sum of its proper divisors (1).

86078171 is an equidigital number, since it uses as much as digits as its factorization.

86078171 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 86078171 is about 9277.8322360344. The cubic root of 86078171 is about 441.5341949610.

The spelling of 86078171 in words is "eighty-six million, seventy-eight thousand, one hundred seventy-one".