85584689 has 4 divisors (see below), whose sum is σ = 86757156. Its totient is φ = 84412224.

The previous prime is 85584677. The next prime is 85584691. The reversal of 85584689 is 98648558.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98648558 = 2 ⋅49324279.

It can be written as a sum of positive squares in 2 ways, for example, as 43230625 + 42354064 = 6575^2 + 6508^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85584689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85584689.

It is not an unprimeable number, because it can be changed into a prime (85584659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586124 + ... + 586269.

It is an arithmetic number, because the mean of its divisors is an integer number (21689289).

Almost surely, 2^85584689 is an apocalyptic number.

It is an amenable number.

85584689 is a deficient number, since it is larger than the sum of its proper divisors (1172467).

85584689 is a wasteful number, since it uses less digits than its factorization.

85584689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172466.

The product of its digits is 2764800, while the sum is 53.

The square root of 85584689 is about 9251.1993276548. The cubic root of 85584689 is about 440.6888126416.

The spelling of 85584689 in words is "eighty-five million, five hundred eighty-four thousand, six hundred eighty-nine".