10365865 has 4 divisors (see below), whose sum is σ = 12439044. Its totient is φ = 8292688.

The previous prime is 10365863. The next prime is 10365889. The reversal of 10365865 is 56856301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56856301 = 3643 ⋅15607.

It can be written as a sum of positive squares in 2 ways, for example, as 7856809 + 2509056 = 2803^2 + 1584^2 .

It is a cyclic number.

It is not a de Polignac number, because 10365865 - 2¹ = 10365863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10365865.

It is not an unprimeable number, because it can be changed into a prime (10365863) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1036582 + ... + 1036591.

It is an arithmetic number, because the mean of its divisors is an integer number (3109761).

Almost surely, 2^10365865 is an apocalyptic number.

It is an amenable number.

10365865 is a deficient number, since it is larger than the sum of its proper divisors (2073179).

10365865 is an equidigital number, since it uses as much as digits as its factorization.

10365865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073178.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 10365865 is about 3219.6063423965. The cubic root of 10365865 is about 218.0395027032.

The spelling of 10365865 in words is "ten million, three hundred sixty-five thousand, eight hundred sixty-five".