85856671 has 2 divisors, whose sum is σ = 85856672. Its totient is φ = 85856670.

The previous prime is 85856663. The next prime is 85856689. The reversal of 85856671 is 17665858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85856671 - 2³ = 85856663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85856651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42928335 + 42928336.

It is an arithmetic number, because the mean of its divisors is an integer number (42928336).

Almost surely, 2^85856671 is an apocalyptic number.

85856671 is a deficient number, since it is larger than the sum of its proper divisors (1).

85856671 is an equidigital number, since it uses as much as digits as its factorization.

85856671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 46.

The square root of 85856671 is about 9265.8874912228. The cubic root of 85856671 is about 441.1551448072.

The spelling of 85856671 in words is "eighty-five million, eight hundred fifty-six thousand, six hundred seventy-one".