2867866 has 8 divisors (see below), whose sum is σ = 4554900. Its totient is φ = 1349568.

The previous prime is 2867861. The next prime is 2867867. The reversal of 2867866 is 6687682.

2867866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2792241 + 75625 = 1671^2 + 275^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2867861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42141 + ... + 42208.

2^2867866 is an apocalyptic number.

2867866 is a deficient number, since it is larger than the sum of its proper divisors (1687034).

2867866 is a wasteful number, since it uses less digits than its factorization.

2867866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84368.

The product of its digits is 193536, while the sum is 43.

The square root of 2867866 is about 1693.4774873024. The cubic root of 2867866 is about 142.0756391308.

The spelling of 2867866 in words is "two million, eight hundred sixty-seven thousand, eight hundred sixty-six".