5866866 has 24 divisors (see below), whose sum is σ = 12759084. Its totient is φ = 1948320.

The previous prime is 5866849. The next prime is 5866867. The reversal of 5866866 is 6686685.

5866866 is a `hidden beast` number, since 586 + 6 + 8 + 66 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5861241 + 5625 = 2421^2 + 75^2 .

It is not an unprimeable number, because it can be changed into a prime (5866867) 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 11 ways as a sum of consecutive naturals, for example, 6736 + ... + 7556.

Almost surely, 2^5866866 is an apocalyptic number.

5866866 is an abundant number, since it is smaller than the sum of its proper divisors (6892218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5866866 is a wasteful number, since it uses less digits than its factorization.

5866866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226 (or 1223 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 5866866 is about 2422.1614314492. The cubic root of 5866866 is about 180.3579912443.

The spelling of 5866866 in words is "five million, eight hundred sixty-six thousand, eight hundred sixty-six".