9634561 has 4 divisors (see below), whose sum is σ = 9677232. Its totient is φ = 9591892.

The previous prime is 9634553. The next prime is 9634571. The reversal of 9634561 is 1654369.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9634561 - 2³ = 9634553 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9634511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20995 + ... + 21448.

It is an arithmetic number, because the mean of its divisors is an integer number (2419308).

Almost surely, 2^9634561 is an apocalyptic number.

It is an amenable number.

9634561 is a deficient number, since it is larger than the sum of its proper divisors (42671).

9634561 is a wasteful number, since it uses less digits than its factorization.

9634561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42670.

The product of its digits is 19440, while the sum is 34.

The square root of 9634561 is about 3103.9589236973. The cubic root of 9634561 is about 212.7864538200.

The spelling of 9634561 in words is "nine million, six hundred thirty-four thousand, five hundred sixty-one".