9893561 has 4 divisors (see below), whose sum is σ = 9900324. Its totient is φ = 9886800.

The previous prime is 9893539. The next prime is 9893573. The reversal of 9893561 is 1653989.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7054336 + 2839225 = 2656^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 9893561 - 2⁶ = 9893497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9893501) 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, 170 + ... + 4451.

It is an arithmetic number, because the mean of its divisors is an integer number (2475081).

Almost surely, 2^9893561 is an apocalyptic number.

It is an amenable number.

9893561 is a deficient number, since it is larger than the sum of its proper divisors (6763).

9893561 is a wasteful number, since it uses less digits than its factorization.

9893561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6762.

The product of its digits is 58320, while the sum is 41.

The square root of 9893561 is about 3145.4031538103. The cubic root of 9893561 is about 214.6763545881.

The spelling of 9893561 in words is "nine million, eight hundred ninety-three thousand, five hundred sixty-one".