9561644 has 6 divisors (see below), whose sum is σ = 16732884. Its totient is φ = 4780820.

The previous prime is 9561631. The next prime is 9561647. The reversal of 9561644 is 4461659.

It is a super-3 number, since 3×9561644³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (9561647) by changing a digit.

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 as a sum of consecutive naturals, namely, 1195202 + ... + 1195209.

It is an arithmetic number, because the mean of its divisors is an integer number (2788814).

Almost surely, 2^9561644 is an apocalyptic number.

It is an amenable number.

9561644 is a deficient number, since it is larger than the sum of its proper divisors (7171240).

9561644 is a wasteful number, since it uses less digits than its factorization.

9561644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390415 (or 2390413 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 9561644 is about 3092.1908091190. The cubic root of 9561644 is about 212.2482851115.

The spelling of 9561644 in words is "nine million, five hundred sixty-one thousand, six hundred forty-four".