6706790509 has 2 divisors, whose sum is σ = 6706790510. Its totient is φ = 6706790508.

The previous prime is 6706790491. The next prime is 6706790543. The reversal of 6706790509 is 9050976076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6423541609 + 283248900 = 80147^2 + 16830^2 .

It is a cyclic number.

It is not a de Polignac number, because 6706790509 - 2⁷ = 6706790381 is a prime.

It is a super-2 number, since 2×6706790509² = 89962077863224958162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6706790579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3353395254 + 3353395255.

It is an arithmetic number, because the mean of its divisors is an integer number (3353395255).

Almost surely, 2^6706790509 is an apocalyptic number.

It is an amenable number.

6706790509 is a deficient number, since it is larger than the sum of its proper divisors (1).

6706790509 is an equidigital number, since it uses as much as digits as its factorization.

6706790509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 49.

The square root of 6706790509 is about 81894.9968496245. The cubic root of 6706790509 is about 1885.8403061378.

The spelling of 6706790509 in words is "six billion, seven hundred six million, seven hundred ninety thousand, five hundred nine".