85570885 has 16 divisors (see below), whose sum is σ = 105430896. Its totient is φ = 66646528.

The previous prime is 85570883. The next prime is 85570907. The reversal of 85570885 is 58807558.

It can be written as a sum of positive squares in 8 ways, for example, as 617796 + 84953089 = 786^2 + 9217^2 .

It is a cyclic number.

It is not a de Polignac number, because 85570885 - 2¹ = 85570883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85570883) 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 15 ways as a sum of consecutive naturals, for example, 35127 + ... + 37483.

It is an arithmetic number, because the mean of its divisors is an integer number (6589431).

Almost surely, 2^85570885 is an apocalyptic number.

It is an amenable number.

85570885 is a deficient number, since it is larger than the sum of its proper divisors (19860011).

85570885 is a wasteful number, since it uses less digits than its factorization.

85570885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552.

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

The square root of 85570885 is about 9250.4532321395. The cubic root of 85570885 is about 440.6651183900.

The spelling of 85570885 in words is "eighty-five million, five hundred seventy thousand, eight hundred eighty-five".