2766845 has 4 divisors (see below), whose sum is σ = 3320220. Its totient is φ = 2213472.

The previous prime is 2766821. The next prime is 2766859. The reversal of 2766845 is 5486672.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1570009 + 1196836 = 1253^2 + 1094^2 .

It is a cyclic number.

It is not a de Polignac number, because 2766845 - 2¹⁰ = 2765821 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2766799 and 2766808.

It is a congruent 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, 276680 + ... + 276689.

It is an arithmetic number, because the mean of its divisors is an integer number (830055).

2^2766845 is an apocalyptic number.

It is an amenable number.

2766845 is a deficient number, since it is larger than the sum of its proper divisors (553375).

2766845 is an equidigital number, since it uses as much as digits as its factorization.

2766845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553374.

The product of its digits is 80640, while the sum is 38.

The square root of 2766845 is about 1663.3835997749. The cubic root of 2766845 is about 140.3874471668.

The spelling of 2766845 in words is "two million, seven hundred sixty-six thousand, eight hundred forty-five".