9861604 has 24 divisors (see below), whose sum is σ = 17749368. Its totient is φ = 4792320.

The previous prime is 9861583. The next prime is 9861611. The reversal of 9861604 is 4061689.

It can be written as a sum of positive squares in 4 ways, for example, as 2244004 + 7617600 = 1498^2 + 2760^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 9861604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38244 + ... + 38500.

It is an arithmetic number, because the mean of its divisors is an integer number (739557).

Almost surely, 2^9861604 is an apocalyptic number.

It is an amenable number.

9861604 is a deficient number, since it is larger than the sum of its proper divisors (7887764).

9861604 is a wasteful number, since it uses less digits than its factorization.

9861604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 9861604 is about 3140.3190920669. The cubic root of 9861604 is about 214.4449646262. Note that the first 3 decimals are identical.

The spelling of 9861604 in words is "nine million, eight hundred sixty-one thousand, six hundred four".