85557808 has 40 divisors (see below), whose sum is σ = 190741760. Its totient is φ = 36417600.

The previous prime is 85557793. The next prime is 85557809. The reversal of 85557808 is 80875558.

It is not an unprimeable number, because it can be changed into a prime (85557809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14383 + ... + 19441.

It is an arithmetic number, because the mean of its divisors is an integer number (4768544).

Almost surely, 2^85557808 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 85557808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95370880).

85557808 is an abundant number, since it is smaller than the sum of its proper divisors (105183952).

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

85557808 is a wasteful number, since it uses less digits than its factorization.

85557808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5225 (or 5219 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 46.

The square root of 85557808 is about 9249.7463749013. The cubic root of 85557808 is about 440.6426696668.

The spelling of 85557808 in words is "eighty-five million, five hundred fifty-seven thousand, eight hundred eight".