9864625 has 16 divisors (see below), whose sum is σ = 12551760. Its totient is φ = 7737600.

The previous prime is 9864601. The next prime is 9864637. The reversal of 9864625 is 5264689.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3549456 + 6315169 = 1884^2 + 2513^2 .

It is not a de Polignac number, because 9864625 - 2⁷ = 9864497 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 5881 + ... + 7369.

It is an arithmetic number, because the mean of its divisors is an integer number (784485).

Almost surely, 2^9864625 is an apocalyptic number.

It is an amenable number.

9864625 is a deficient number, since it is larger than the sum of its proper divisors (2687135).

9864625 is a wasteful number, since it uses less digits than its factorization.

9864625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557 (or 1547 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 9864625 is about 3140.8000573102. The cubic root of 9864625 is about 214.4668600533.

The spelling of 9864625 in words is "nine million, eight hundred sixty-four thousand, six hundred twenty-five".