9645641 has 8 divisors (see below), whose sum is σ = 10006464. Its totient is φ = 9290160.

The previous prime is 9645637. The next prime is 9645653. The reversal of 9645641 is 1465469.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9645641 - 2² = 9645637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9645611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2546 + ... + 5076.

It is an arithmetic number, because the mean of its divisors is an integer number (1250808).

Almost surely, 2^9645641 is an apocalyptic number.

It is an amenable number.

9645641 is a deficient number, since it is larger than the sum of its proper divisors (360823).

9645641 is a wasteful number, since it uses less digits than its factorization.

9645641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671.

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

The square root of 9645641 is about 3105.7432282789. The cubic root of 9645641 is about 212.8679925876.

The spelling of 9645641 in words is "nine million, six hundred forty-five thousand, six hundred forty-one".