6700664807 has 2 divisors, whose sum is σ = 6700664808. Its totient is φ = 6700664806.

The previous prime is 6700664797. The next prime is 6700664827. The reversal of 6700664807 is 7084660076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6700664807 - 2⁴ = 6700664791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6700664827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3350332403 + 3350332404.

It is an arithmetic number, because the mean of its divisors is an integer number (3350332404).

Almost surely, 2^6700664807 is an apocalyptic number.

6700664807 is a deficient number, since it is larger than the sum of its proper divisors (1).

6700664807 is an equidigital number, since it uses as much as digits as its factorization.

6700664807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 6700664807 is about 81857.5885730822. The cubic root of 6700664807 is about 1885.2659820220.

The spelling of 6700664807 in words is "six billion, seven hundred million, six hundred sixty-four thousand, eight hundred seven".