85569589 has 8 divisors (see below), whose sum is σ = 98660160. Its totient is φ = 72695616.

The previous prime is 85569587. The next prime is 85569607. The reversal of 85569589 is 98596558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85569589 - 2¹ = 85569587 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 (85569587) 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, 53299 + ... + 54880.

It is an arithmetic number, because the mean of its divisors is an integer number (12332520).

Almost surely, 2^85569589 is an apocalyptic number.

It is an amenable number.

85569589 is a deficient number, since it is larger than the sum of its proper divisors (13090571).

85569589 is a wasteful number, since it uses less digits than its factorization.

85569589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108299.

The product of its digits is 3888000, while the sum is 55.

The square root of 85569589 is about 9250.3831812525. The cubic root of 85569589 is about 440.6628937047.

It can be divided in two parts, 8556 and 9589, that added together give a triangular number (18145 = T₁₉₀).

The spelling of 85569589 in words is "eighty-five million, five hundred sixty-nine thousand, five hundred eighty-nine".