85684863 has 16 divisors (see below), whose sum is σ = 124788096. Its totient is φ = 51865440.

The previous prime is 85684829. The next prime is 85684871. The reversal of 85684863 is 36848658.

It is not a de Polignac number, because 85684863 - 2⁹ = 85684351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85684883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47056 + ... + 48842.

It is an arithmetic number, because the mean of its divisors is an integer number (7799256).

Almost surely, 2^85684863 is an apocalyptic number.

85684863 is a deficient number, since it is larger than the sum of its proper divisors (39103233).

85684863 is a wasteful number, since it uses less digits than its factorization.

85684863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254.

The product of its digits is 1105920, while the sum is 48.

The square root of 85684863 is about 9256.6118531566. The cubic root of 85684863 is about 440.8606827474.

It can be divided in two parts, 8568 and 4863, that added together give a palindrome (13431).

The spelling of 85684863 in words is "eighty-five million, six hundred eighty-four thousand, eight hundred sixty-three".