5659866 has 24 divisors (see below), whose sum is σ = 12404340. Its totient is φ = 1864896.

The previous prime is 5659859. The next prime is 5659873. The reversal of 5659866 is 6689565.

5659866 is a `hidden beast` number, since 56 + 598 + 6 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (5659859) and next prime (5659873).

It can be written as a sum of positive squares in 2 ways, for example, as 5659641 + 225 = 2379^2 + 15^2 .

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 165 + ... + 3368.

Almost surely, 2^5659866 is an apocalyptic number.

5659866 is an abundant number, since it is smaller than the sum of its proper divisors (6744474).

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

5659866 is a wasteful number, since it uses less digits than its factorization.

5659866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3630 (or 3627 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 5659866 is about 2379.0472883068. The cubic root of 5659866 is about 178.2113594168.

The spelling of 5659866 in words is "five million, six hundred fifty-nine thousand, eight hundred sixty-six".