85806020 has 24 divisors (see below), whose sum is σ = 184028544. Its totient is φ = 33591776.

The previous prime is 85806011. The next prime is 85806023. The reversal of 85806020 is 2060858.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (85806023) 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 in 7 ways as a sum of consecutive naturals, for example, 44702 + ... + 46581.

It is an arithmetic number, because the mean of its divisors is an integer number (7667856).

Almost surely, 2^85806020 is an apocalyptic number.

It is an amenable number.

85806020 is an abundant number, since it is smaller than the sum of its proper divisors (98222524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85806020 is a wasteful number, since it uses less digits than its factorization.

85806020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91339 (or 91337 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 85806020 is about 9263.1538905494. The cubic root of 85806020 is about 441.0683748275.

Adding to 85806020 its reverse (2060858), we get a palindrome (87866878).

The spelling of 85806020 in words is "eighty-five million, eight hundred six thousand, twenty".