2836865 has 8 divisors (see below), whose sum is σ = 3435048. Its totient is φ = 2248960.

The previous prime is 2836861. The next prime is 2836879. The reversal of 2836865 is 5686382.

It can be written as a sum of positive squares in 4 ways, for example, as 150544 + 2686321 = 388^2 + 1639^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2836865 - 2² = 2836861 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2836861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1946 + ... + 3075.

It is an arithmetic number, because the mean of its divisors is an integer number (429381).

2^2836865 is an apocalyptic number.

It is an amenable number.

2836865 is a deficient number, since it is larger than the sum of its proper divisors (598183).

2836865 is a wasteful number, since it uses less digits than its factorization.

2836865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5139.

The product of its digits is 69120, while the sum is 38.

The square root of 2836865 is about 1684.2995576797. The cubic root of 2836865 is about 141.5618478773.

The spelling of 2836865 in words is "two million, eight hundred thirty-six thousand, eight hundred sixty-five".