85863220 has 24 divisors (see below), whose sum is σ = 182002464. Its totient is φ = 34023456.

The previous prime is 85863181. The next prime is 85863227. The reversal of 85863220 is 2236858.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85863227) 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, 17922 + ... + 22201.

It is an arithmetic number, because the mean of its divisors is an integer number (7583436).

Almost surely, 2^85863220 is an apocalyptic number.

It is an amenable number.

85863220 is an abundant number, since it is smaller than the sum of its proper divisors (96139244).

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

85863220 is a wasteful number, since it uses less digits than its factorization.

85863220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40239 (or 40237 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 85863220 is about 9266.2408775080. The cubic root of 85863220 is about 441.1663613753.

The spelling of 85863220 in words is "eighty-five million, eight hundred sixty-three thousand, two hundred twenty".