1568668 has 12 divisors (see below), whose sum is σ = 2840040. Its totient is φ = 757232.

The previous prime is 1568657. The next prime is 1568687. The reversal of 1568668 is 8668651.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1568668.

It is a congruent number.

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, 6646 + ... + 6877.

It is an arithmetic number, because the mean of its divisors is an integer number (236670).

2^1568668 is an apocalyptic number.

It is an amenable number.

1568668 is a deficient number, since it is larger than the sum of its proper divisors (1271372).

1568668 is a wasteful number, since it uses less digits than its factorization.

1568668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13556 (or 13554 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 1568668 is about 1252.4647699636. The cubic root of 1568668 is about 116.1922100708.

The spelling of 1568668 in words is "one million, five hundred sixty-eight thousand, six hundred sixty-eight".