2866091 has 4 divisors (see below), whose sum is σ = 2882832. Its totient is φ = 2849352.

The previous prime is 2866069. The next prime is 2866109. The reversal of 2866091 is 1906682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1906682 = 2 ⋅953341.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2866091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2866001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8111 + ... + 8456.

It is an arithmetic number, because the mean of its divisors is an integer number (720708).

2^2866091 is an apocalyptic number.

2866091 is a deficient number, since it is larger than the sum of its proper divisors (16741).

2866091 is a wasteful number, since it uses less digits than its factorization.

2866091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16740.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2866091 is about 1692.9533366280. The cubic root of 2866091 is about 142.0463215935.

The spelling of 2866091 in words is "two million, eight hundred sixty-six thousand, ninety-one".