6568531893 has 128 divisors (see below), whose sum is σ = 13195837440. Its totient is φ = 3124085760.

The previous prime is 6568531847. The next prime is 6568531901. The reversal of 6568531893 is 3981358656.

It is not a de Polignac number, because 6568531893 - 2¹⁶ = 6568466357 is a prime.

It is a super-2 number, since 2×6568531893² = 86291222458716326898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6568535893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1305180 + ... + 1310202.

It is an arithmetic number, because the mean of its divisors is an integer number (103092480).

Almost surely, 2^6568531893 is an apocalyptic number.

6568531893 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

6568531893 is an abundant number, since it is smaller than the sum of its proper divisors (6627305547).

6568531893 is a wasteful number, since it uses less digits than its factorization.

6568531893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5104 (or 5098 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 6568531893 is about 81046.4798310204. The cubic root of 6568531893 is about 1872.7915348248.

The spelling of 6568531893 in words is "six billion, five hundred sixty-eight million, five hundred thirty-one thousand, eight hundred ninety-three".