9633561 has 16 divisors (see below), whose sum is σ = 14859264. Its totient is φ = 5437584.

The previous prime is 9633553. The next prime is 9633563. The reversal of 9633561 is 1653369.

It is not a de Polignac number, because 9633561 - 2³ = 9633553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9633563) 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, 1021 + ... + 4506.

It is an arithmetic number, because the mean of its divisors is an integer number (928704).

Almost surely, 2^9633561 is an apocalyptic number.

It is an amenable number.

9633561 is a deficient number, since it is larger than the sum of its proper divisors (5225703).

9633561 is a wasteful number, since it uses less digits than its factorization.

9633561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5620.

The product of its digits is 14580, while the sum is 33.

The square root of 9633561 is about 3103.7978349113. The cubic root of 9633561 is about 212.7790916504.

It can be divided in two parts, 963 and 3561, that multiplied together give a palindrome (3429243).

The spelling of 9633561 in words is "nine million, six hundred thirty-three thousand, five hundred sixty-one".