9161568 has 72 divisors (see below), whose sum is σ = 28068768. Its totient is φ = 2817792.

The previous prime is 9161557. The next prime is 9161597. The reversal of 9161568 is 8651619.

9161568 is a `hidden beast` number, since 91 + 6 + 1 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2521 + ... + 4967.

It is an arithmetic number, because the mean of its divisors is an integer number (389844).

Almost surely, 2^9161568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9161568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14034384).

9161568 is an abundant number, since it is smaller than the sum of its proper divisors (18907200).

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

9161568 is a wasteful number, since it uses less digits than its factorization.

9161568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476 (or 2465 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 9161568 is about 3026.8082198910. The cubic root of 9161568 is about 209.2457294555.

The spelling of 9161568 in words is "nine million, one hundred sixty-one thousand, five hundred sixty-eight".