2830865 has 4 divisors (see below), whose sum is σ = 3397044. Its totient is φ = 2264688.

The previous prime is 2830859. The next prime is 2830871. The reversal of 2830865 is 5680382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5680382 = 2 ⋅2840191.

It is an interprime number because it is at equal distance from previous prime (2830859) and next prime (2830871).

It can be written as a sum of positive squares in 2 ways, for example, as 541696 + 2289169 = 736^2 + 1513^2 .

It is a cyclic number.

It is not a de Polignac number, because 2830865 - 2⁶ = 2830801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283082 + ... + 283091.

It is an arithmetic number, because the mean of its divisors is an integer number (849261).

2^2830865 is an apocalyptic number.

It is an amenable number.

2830865 is a deficient number, since it is larger than the sum of its proper divisors (566179).

2830865 is an equidigital number, since it uses as much as digits as its factorization.

2830865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566178.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 2830865 is about 1682.5174590476. The cubic root of 2830865 is about 141.4619758235.

The spelling of 2830865 in words is "two million, eight hundred thirty thousand, eight hundred sixty-five".