85859620 has 96 divisors (see below), whose sum is σ = 227082240. Its totient is φ = 26490240.

The previous prime is 85859603. The next prime is 85859623. The reversal of 85859620 is 2695858.

It is not an unprimeable number, because it can be changed into a prime (85859623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195361 + ... + 195799.

It is an arithmetic number, because the mean of its divisors is an integer number (2365440).

Almost surely, 2^85859620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85859620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113541120).

85859620 is an abundant number, since it is smaller than the sum of its proper divisors (141222620).

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

85859620 is a wasteful number, since it uses less digits than its factorization.

85859620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 85859620 is about 9266.0466219419. The cubic root of 85859620 is about 441.1601956733.

The spelling of 85859620 in words is "eighty-five million, eight hundred fifty-nine thousand, six hundred twenty".