9885645 has 80 divisors (see below), whose sum is σ = 22163328. Its totient is φ = 4095360.

The previous prime is 9885637. The next prime is 9885647. The reversal of 9885645 is 5465889.

9885645 is a `hidden beast` number, since 9 + 88 + 564 + 5 = 666.

It is not a de Polignac number, because 9885645 - 2³ = 9885637 is a prime.

It is a super-3 number, since 3×9885645³ (a number of 22 digits) contains 333 as substring.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9885645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9885647) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 31027 + ... + 31343.

Almost surely, 2^9885645 is an apocalyptic number.

It is an amenable number.

9885645 is an abundant number, since it is smaller than the sum of its proper divisors (12277683).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9885645 is a wasteful number, since it uses less digits than its factorization.

9885645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 343 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 9885645 is about 3144.1445577454. The cubic root of 9885645 is about 214.6190839566.

The spelling of 9885645 in words is "nine million, eight hundred eighty-five thousand, six hundred forty-five".