5686866 has 12 divisors (see below), whose sum is σ = 12321582. Its totient is φ = 1895616.

The previous prime is 5686861. The next prime is 5686867. The reversal of 5686866 is 6686865.

5686866 is a `hidden beast` number, since 568 + 6 + 86 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5659641 + 27225 = 2379^2 + 165^2 .

It is not an unprimeable number, because it can be changed into a prime (5686861) 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 5 ways as a sum of consecutive naturals, for example, 157951 + ... + 157986.

Almost surely, 2^5686866 is an apocalyptic number.

5686866 is an abundant number, since it is smaller than the sum of its proper divisors (6634716).

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

5686866 is a wasteful number, since it uses less digits than its factorization.

5686866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315945 (or 315942 counting only the distinct ones).

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

The square root of 5686866 is about 2384.7150773206. The cubic root of 5686866 is about 178.4942916518.

Subtracting 5686866 from its reverse (6686865), we obtain a palindrome (999999).

The spelling of 5686866 in words is "five million, six hundred eighty-six thousand, eight hundred sixty-six".