6840568737 has 12 divisors (see below), whose sum is σ = 10048293840. Its totient is φ = 4483084248.

The previous prime is 6840568729. The next prime is 6840568789. The reversal of 6840568737 is 7378650486.

6840568737 is a `hidden beast` number, since 6 + 8 + 4 + 0 + 568 + 73 + 7 = 666.

It is not a de Polignac number, because 6840568737 - 2³ = 6840568729 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6840568937) 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 11 ways as a sum of consecutive naturals, for example, 6440683 + ... + 6441744.

It is an arithmetic number, because the mean of its divisors is an integer number (837357820).

Almost surely, 2^6840568737 is an apocalyptic number.

It is an amenable number.

6840568737 is a deficient number, since it is larger than the sum of its proper divisors (3207725103).

6840568737 is a wasteful number, since it uses less digits than its factorization.

6840568737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12882492 (or 12882489 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The square root of 6840568737 is about 82707.7308176207. The cubic root of 6840568737 is about 1898.2966023111.

The spelling of 6840568737 in words is "six billion, eight hundred forty million, five hundred sixty-eight thousand, seven hundred thirty-seven".