9644641 has 2 divisors, whose sum is σ = 9644642. Its totient is φ = 9644640.

The previous prime is 9644633. The next prime is 9644653. The reversal of 9644641 is 1464469.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7862416 + 1782225 = 2804^2 + 1335^2 .

It is a cyclic number.

It is not a de Polignac number, because 9644641 - 2³ = 9644633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9644597 and 9644606.

It is not a weakly prime, because it can be changed into another prime (9644741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4822320 + 4822321.

It is an arithmetic number, because the mean of its divisors is an integer number (4822321).

Almost surely, 2^9644641 is an apocalyptic number.

It is an amenable number.

9644641 is a deficient number, since it is larger than the sum of its proper divisors (1).

9644641 is an equidigital number, since it uses as much as digits as its factorization.

9644641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 9644641 is about 3105.5822320460. The cubic root of 9644641 is about 212.8606360573.

The spelling of 9644641 in words is "nine million, six hundred forty-four thousand, six hundred forty-one".