2790865 has 24 divisors (see below), whose sum is σ = 4213440. Its totient is φ = 1737120.

The previous prime is 2790859. The next prime is 2790871. The reversal of 2790865 is 5680972.

2790865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2790859) and next prime (2790871).

It is not a de Polignac number, because 2790865 - 2³ = 2790857 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 23 ways as a sum of consecutive naturals, for example, 3906 + ... + 4564.

It is an arithmetic number, because the mean of its divisors is an integer number (175560).

2^2790865 is an apocalyptic number.

It is an amenable number.

2790865 is a deficient number, since it is larger than the sum of its proper divisors (1422575).

2790865 is a wasteful number, since it uses less digits than its factorization.

2790865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2790865 is about 1670.5882197597. The cubic root of 2790865 is about 140.7925289005.

It can be divided in two parts, 2790 and 865, that added together give a triangular number (3655 = T₈₅).

The spelling of 2790865 in words is "two million, seven hundred ninety thousand, eight hundred sixty-five".