6840568811 has 2 divisors, whose sum is σ = 6840568812. Its totient is φ = 6840568810.

The previous prime is 6840568789. The next prime is 6840568829. The reversal of 6840568811 is 1188650486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6840568811 - 2¹⁸ = 6840306667 is a prime.

It is a super-3 number, since 3×6840568811³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (6840568411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3420284405 + 3420284406.

It is an arithmetic number, because the mean of its divisors is an integer number (3420284406).

Almost surely, 2^6840568811 is an apocalyptic number.

6840568811 is a deficient number, since it is larger than the sum of its proper divisors (1).

6840568811 is an equidigital number, since it uses as much as digits as its factorization.

6840568811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 368640, while the sum is 47.

The square root of 6840568811 is about 82707.7312649791. The cubic root of 6840568811 is about 1898.2966091563.

The spelling of 6840568811 in words is "six billion, eight hundred forty million, five hundred sixty-eight thousand, eight hundred eleven".