5688666 has 12 divisors (see below), whose sum is σ = 12325482. Its totient is φ = 1896216.

The previous prime is 5688653. The next prime is 5688667. The reversal of 5688666 is 6668865.

It can be written as a sum of positive squares in only one way, i.e., 5688225 + 441 = 2385^2 + 21^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5688667) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 158001 + ... + 158036.

Almost surely, 2^5688666 is an apocalyptic number.

5688666 is an abundant number, since it is smaller than the sum of its proper divisors (6636816).

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

5688666 is a wasteful number, since it uses less digits than its factorization.

5688666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316045 (or 316042 counting only the distinct ones).

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

The square root of 5688666 is about 2385.0924510383. The cubic root of 5688666 is about 178.5131219316.

The spelling of 5688666 in words is "five million, six hundred eighty-eight thousand, six hundred sixty-six".