2866445 has 4 divisors (see below), whose sum is σ = 3439740. Its totient is φ = 2293152.

The previous prime is 2866441. The next prime is 2866453. The reversal of 2866445 is 5446682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5446682 = 2 ⋅2723341.

It can be written as a sum of positive squares in 2 ways, for example, as 1054729 + 1811716 = 1027^2 + 1346^2 .

It is a cyclic number.

It is not a de Polignac number, because 2866445 - 2² = 2866441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2866441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286640 + ... + 286649.

It is an arithmetic number, because the mean of its divisors is an integer number (859935).

2^2866445 is an apocalyptic number.

It is an amenable number.

2866445 is a deficient number, since it is larger than the sum of its proper divisors (573295).

2866445 is an equidigital number, since it uses as much as digits as its factorization.

2866445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573294.

The product of its digits is 46080, while the sum is 35.

The square root of 2866445 is about 1693.0578844210. The cubic root of 2866445 is about 142.0521695502.

The spelling of 2866445 in words is "two million, eight hundred sixty-six thousand, four hundred forty-five".