9005813685 has 40 divisors (see below), whose sum is σ = 17611377696. Its totient is φ = 4366452960.

The previous prime is 9005813683. The next prime is 9005813693. The reversal of 9005813685 is 5863185009.

9005813685 is a `hidden beast` number, since 9 + 0 + 0 + 581 + 3 + 68 + 5 = 666.

It is not a de Polignac number, because 9005813685 - 2¹ = 9005813683 is a prime.

It is a super-2 number, since 2×9005813685² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 9005813685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9005813683) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1006299 + ... + 1015208.

Almost surely, 2^9005813685 is an apocalyptic number.

It is an amenable number.

9005813685 is a deficient number, since it is larger than the sum of its proper divisors (8605564011).

9005813685 is a wasteful number, since it uses less digits than its factorization.

9005813685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021535 (or 2021526 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 9005813685 is about 94898.9656687574. The cubic root of 9005813685 is about 2080.5316137623.

The spelling of 9005813685 in words is "nine billion, five million, eight hundred thirteen thousand, six hundred eighty-five".