85069837 has 2 divisors, whose sum is σ = 85069838. Its totient is φ = 85069836.

The previous prime is 85069811. The next prime is 85069843. The reversal of 85069837 is 73896058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84382596 + 687241 = 9186^2 + 829^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85069837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85063837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42534918 + 42534919.

It is an arithmetic number, because the mean of its divisors is an integer number (42534919).

Almost surely, 2^85069837 is an apocalyptic number.

It is an amenable number.

85069837 is a deficient number, since it is larger than the sum of its proper divisors (1).

85069837 is an equidigital number, since it uses as much as digits as its factorization.

85069837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 85069837 is about 9223.3311227560. The cubic root of 85069837 is about 439.8033504853.

The spelling of 85069837 in words is "eighty-five million, sixty-nine thousand, eight hundred thirty-seven".