8581085 has 4 divisors (see below), whose sum is σ = 10297308. Its totient is φ = 6864864.

The previous prime is 8581051. The next prime is 8581087. The reversal of 8581085 is 5801858.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5801858 = 2 ⋅2900929.

It can be written as a sum of positive squares in 2 ways, for example, as 1301881 + 7279204 = 1141^2 + 2698^2 .

It is a cyclic number.

It is not a de Polignac number, because 8581085 - 2⁶ = 8581021 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 (8581087) 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, 858104 + ... + 858113.

It is an arithmetic number, because the mean of its divisors is an integer number (2574327).

Almost surely, 2^8581085 is an apocalyptic number.

It is an amenable number.

8581085 is a deficient number, since it is larger than the sum of its proper divisors (1716223).

8581085 is a wasteful number, since it uses less digits than its factorization.

8581085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716222.

The product of its (nonzero) digits is 12800, while the sum is 35.

The square root of 8581085 is about 2929.3489037668. The cubic root of 8581085 is about 204.7296455958.

It can be divided in two parts, 858 and 1085, that multiplied together give a triangular number (930930 = T₁₃₆₄).

The spelling of 8581085 in words is "eight million, five hundred eighty-one thousand, eighty-five".