2860865 has 12 divisors (see below), whose sum is σ = 3993876. Its totient is φ = 1961568.

The previous prime is 2860853. The next prime is 2860883. The reversal of 2860865 is 5680682.

2860865 = 120² + 121² + ... + 217².

2860865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1787569 + 1073296 = 1337^2 + 1036^2 .

It is not a de Polignac number, because 2860865 - 2⁶ = 2860801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 5594 + ... + 6083.

It is an arithmetic number, because the mean of its divisors is an integer number (332823).

2^2860865 is an apocalyptic number.

It is an amenable number.

2860865 is a deficient number, since it is larger than the sum of its proper divisors (1133011).

2860865 is a wasteful number, since it uses less digits than its factorization.

2860865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11696 (or 11689 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 2860865 is about 1691.4091758058. The cubic root of 2860865 is about 141.9599338128.

The spelling of 2860865 in words is "two million, eight hundred sixty thousand, eight hundred sixty-five".