9647561 has 16 divisors (see below), whose sum is σ = 12278400. Its totient is φ = 7514640.

The previous prime is 9647543. The next prime is 9647569. The reversal of 9647561 is 1657469.

9647561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9647561 - 2¹⁰ = 9646537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9647569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2495 + ... + 5051.

It is an arithmetic number, because the mean of its divisors is an integer number (767400).

Almost surely, 2^9647561 is an apocalyptic number.

It is an amenable number.

9647561 is a deficient number, since it is larger than the sum of its proper divisors (2630839).

9647561 is a wasteful number, since it uses less digits than its factorization.

9647561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2589 (or 2575 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 9647561 is about 3106.0523176534. The cubic root of 9647561 is about 212.8821157005.

The spelling of 9647561 in words is "nine million, six hundred forty-seven thousand, five hundred sixty-one".