85069811 has 2 divisors, whose sum is σ = 85069812. Its totient is φ = 85069810.

The previous prime is 85069769. The next prime is 85069837. The reversal of 85069811 is 11896058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85069811 - 2¹⁴ = 85053427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85069861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42534905 + 42534906.

It is an arithmetic number, because the mean of its divisors is an integer number (42534906).

Almost surely, 2^85069811 is an apocalyptic number.

85069811 is a deficient number, since it is larger than the sum of its proper divisors (1).

85069811 is an equidigital number, since it uses as much as digits as its factorization.

85069811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 85069811 is about 9223.3297132868. The cubic root of 85069811 is about 439.8033056794.

The spelling of 85069811 in words is "eighty-five million, sixty-nine thousand, eight hundred eleven".