10385865 has 24 divisors (see below), whose sum is σ = 20574528. Its totient is φ = 4747680.

The previous prime is 10385839. The next prime is 10385867. The reversal of 10385865 is 56858301.

It is not a de Polignac number, because 10385865 - 2⁶ = 10385801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10385867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16171 + ... + 16800.

It is an arithmetic number, because the mean of its divisors is an integer number (857272).

Almost surely, 2^10385865 is an apocalyptic number.

10385865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10385865 is a deficient number, since it is larger than the sum of its proper divisors (10188663).

10385865 is a wasteful number, since it uses less digits than its factorization.

10385865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32989 (or 32986 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 10385865 is about 3222.7108154471. The cubic root of 10385865 is about 218.1796417870.

It can be divided in two parts, 1038 and 5865, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 10385865 in words is "ten million, three hundred eighty-five thousand, eight hundred sixty-five".