6700706809 has 2 divisors, whose sum is σ = 6700706810. Its totient is φ = 6700706808.

The previous prime is 6700706693. The next prime is 6700706851. The reversal of 6700706809 is 9086070076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5177522025 + 1523184784 = 71955^2 + 39028^2 .

It is a cyclic number.

It is not a de Polignac number, because 6700706809 - 2⁷ = 6700706681 is a prime.

It is not a weakly prime, because it can be changed into another prime (6740706809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3350353404 + 3350353405.

It is an arithmetic number, because the mean of its divisors is an integer number (3350353405).

Almost surely, 2^6700706809 is an apocalyptic number.

It is an amenable number.

6700706809 is a deficient number, since it is larger than the sum of its proper divisors (1).

6700706809 is an equidigital number, since it uses as much as digits as its factorization.

6700706809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 6700706809 is about 81857.8451280022. The cubic root of 6700706809 is about 1885.2699211722.

The spelling of 6700706809 in words is "six billion, seven hundred million, seven hundred six thousand, eight hundred nine".