3666568 has 16 divisors (see below), whose sum is σ = 7174080. Its totient is φ = 1753488.

The previous prime is 3666539. The next prime is 3666581. The reversal of 3666568 is 8656663.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3666568.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9780 + ... + 10147.

It is an arithmetic number, because the mean of its divisors is an integer number (448380).

Almost surely, 2^3666568 is an apocalyptic number.

It is an amenable number.

3666568 is a deficient number, since it is larger than the sum of its proper divisors (3507512).

3666568 is a wasteful number, since it uses less digits than its factorization.

3666568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19956 (or 19952 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 3666568 is about 1914.8284518463. The cubic root of 3666568 is about 154.2007838136.

The spelling of 3666568 in words is "three million, six hundred sixty-six thousand, five hundred sixty-eight".