9865601 has 2 divisors, whose sum is σ = 9865602. Its totient is φ = 9865600.

The previous prime is 9865589. The next prime is 9865613. The reversal of 9865601 is 1065689.

It is a balanced prime because it is at equal distance from previous prime (9865589) and next prime (9865613).

It can be written as a sum of positive squares in only one way, i.e., 7974976 + 1890625 = 2824^2 + 1375^2 .

It is an emirp because it is prime and its reverse (1065689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9865601 - 2¹⁸ = 9603457 is a prime.

It is not a weakly prime, because it can be changed into another prime (9865621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4932800 + 4932801.

It is an arithmetic number, because the mean of its divisors is an integer number (4932801).

Almost surely, 2^9865601 is an apocalyptic number.

It is an amenable number.

9865601 is a deficient number, since it is larger than the sum of its proper divisors (1).

9865601 is an equidigital number, since it uses as much as digits as its factorization.

9865601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 9865601 is about 3140.9554278913. The cubic root of 9865601 is about 214.4739328937.

The spelling of 9865601 in words is "nine million, eight hundred sixty-five thousand, six hundred one".