5640868 has 6 divisors (see below), whose sum is σ = 9871526. Its totient is φ = 2820432.

The previous prime is 5640863. The next prime is 5640871. The reversal of 5640868 is 8680465.

5640868 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5189284 + 451584 = 2278^2 + 672^2 .

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (5640863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 705105 + ... + 705112.

Almost surely, 2^5640868 is an apocalyptic number.

It is an amenable number.

5640868 is a deficient number, since it is larger than the sum of its proper divisors (4230658).

5640868 is a wasteful number, since it uses less digits than its factorization.

5640868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410221 (or 1410219 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 5640868 is about 2375.0511573438. The cubic root of 5640868 is about 178.0117401674.

The spelling of 5640868 in words is "five million, six hundred forty thousand, eight hundred sixty-eight".