3600865 has 4 divisors (see below), whose sum is σ = 4321044. Its totient is φ = 2880688.

The previous prime is 3600853. The next prime is 3600881. The reversal of 3600865 is 5680063.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5680063 = 53 ⋅107171.

It can be written as a sum of positive squares in 2 ways, for example, as 583696 + 3017169 = 764^2 + 1737^2 .

It is a cyclic number.

It is not a de Polignac number, because 3600865 - 2¹⁷ = 3469793 is a prime.

It is a Duffinian number.

3600865 is a lucky number.

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 3 ways as a sum of consecutive naturals, for example, 360082 + ... + 360091.

It is an arithmetic number, because the mean of its divisors is an integer number (1080261).

Almost surely, 2^3600865 is an apocalyptic number.

It is an amenable number.

3600865 is a deficient number, since it is larger than the sum of its proper divisors (720179).

3600865 is an equidigital number, since it uses as much as digits as its factorization.

3600865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720178.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 3600865 is about 1897.5945299247. The cubic root of 3600865 is about 153.2741606375.

It can be divided in two parts, 3600 and 865, that added together give a triangular number (4465 = T₉₄).

The spelling of 3600865 in words is "three million, six hundred thousand, eight hundred sixty-five".