6706811081 has 2 divisors, whose sum is σ = 6706811082. Its totient is φ = 6706811080.

The previous prime is 6706811053. The next prime is 6706811107. The reversal of 6706811081 is 1801186076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6478801081 + 228010000 = 80491^2 + 15100^2 .

It is a cyclic number.

It is not a de Polignac number, because 6706811081 - 2²⁶ = 6639702217 is a prime.

It is a super-3 number, since 3×6706811081³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6706811981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3353405540 + 3353405541.

It is an arithmetic number, because the mean of its divisors is an integer number (3353405541).

Almost surely, 2^6706811081 is an apocalyptic number.

It is an amenable number.

6706811081 is a deficient number, since it is larger than the sum of its proper divisors (1).

6706811081 is an equidigital number, since it uses as much as digits as its factorization.

6706811081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 6706811081 is about 81895.1224493864. The cubic root of 6706811081 is about 1885.8422343063.

The spelling of 6706811081 in words is "six billion, seven hundred six million, eight hundred eleven thousand, eighty-one".