85020071 has 2 divisors, whose sum is σ = 85020072. Its totient is φ = 85020070.

The previous prime is 85020049. The next prime is 85020127. The reversal of 85020071 is 17002058.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85020071 - 2⁶ = 85020007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85020371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42510035 + 42510036.

It is an arithmetic number, because the mean of its divisors is an integer number (42510036).

Almost surely, 2^85020071 is an apocalyptic number.

85020071 is a deficient number, since it is larger than the sum of its proper divisors (1).

85020071 is an equidigital number, since it uses as much as digits as its factorization.

85020071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 85020071 is about 9220.6328958483. The cubic root of 85020071 is about 439.7175718524.

The spelling of 85020071 in words is "eighty-five million, twenty thousand, seventy-one".