9873564 has 24 divisors (see below), whose sum is σ = 23145360. Its totient is φ = 3275904.

The previous prime is 9873557. The next prime is 9873569. The reversal of 9873564 is 4653789.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9873569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 952 + ... + 4544.

It is an arithmetic number, because the mean of its divisors is an integer number (964390).

Almost surely, 2^9873564 is an apocalyptic number.

It is an amenable number.

9873564 is an abundant number, since it is smaller than the sum of its proper divisors (13271796).

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

9873564 is a wasteful number, since it uses less digits than its factorization.

9873564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3829 (or 3827 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 9873564 is about 3142.2227801351. Note that the first 3 decimals coincide. The cubic root of 9873564 is about 214.5316214432.

The spelling of 9873564 in words is "nine million, eight hundred seventy-three thousand, five hundred sixty-four".