10009865 has 8 divisors (see below), whose sum is σ = 12644160. Its totient is φ = 7586352.

The previous prime is 10009823. The next prime is 10009871. The reversal of 10009865 is 56890001.

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 10009865 - 2⁸ = 10009609 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 52589 + ... + 52778.

It is an arithmetic number, because the mean of its divisors is an integer number (1580520).

Almost surely, 2^10009865 is an apocalyptic number.

It is an amenable number.

10009865 is a deficient number, since it is larger than the sum of its proper divisors (2634295).

10009865 is a wasteful number, since it uses less digits than its factorization.

10009865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105391.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 10009865 is about 3163.8370691298. The cubic root of 10009865 is about 215.5142907138.

Adding to 10009865 its reverse (56890001), we get a palindrome (66899866).

The spelling of 10009865 in words is "ten million, nine thousand, eight hundred sixty-five".