85836785 has 4 divisors (see below), whose sum is σ = 103004148. Its totient is φ = 68669424.

The previous prime is 85836761. The next prime is 85836787. The reversal of 85836785 is 58763858.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58763858 = 2 ⋅29381929.

It can be written as a sum of positive squares in 2 ways, for example, as 46799281 + 39037504 = 6841^2 + 6248^2 .

It is a cyclic number.

It is not a de Polignac number, because 85836785 - 2¹² = 85832689 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85836787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8583674 + ... + 8583683.

It is an arithmetic number, because the mean of its divisors is an integer number (25751037).

Almost surely, 2^85836785 is an apocalyptic number.

It is an amenable number.

85836785 is a deficient number, since it is larger than the sum of its proper divisors (17167363).

85836785 is a wasteful number, since it uses less digits than its factorization.

85836785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17167362.

The product of its digits is 1612800, while the sum is 50.

The square root of 85836785 is about 9264.8143532399. The cubic root of 85836785 is about 441.1210822682.

The spelling of 85836785 in words is "eighty-five million, eight hundred thirty-six thousand, seven hundred eighty-five".