6706320139 has 2 divisors, whose sum is σ = 6706320140. Its totient is φ = 6706320138.

The previous prime is 6706320121. The next prime is 6706320143. The reversal of 6706320139 is 9310236076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6706320139 - 2⁵ = 6706320107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6706320098 and 6706320107.

It is not a weakly prime, because it can be changed into another prime (6706320169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3353160069 + 3353160070.

It is an arithmetic number, because the mean of its divisors is an integer number (3353160070).

Almost surely, 2^6706320139 is an apocalyptic number.

6706320139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6706320139 is an equidigital number, since it uses as much as digits as its factorization.

6706320139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 6706320139 is about 81892.1250121158. The cubic root of 6706320139 is about 1885.7962183116.

The spelling of 6706320139 in words is "six billion, seven hundred six million, three hundred twenty thousand, one hundred thirty-nine".