706840019 has 2 divisors, whose sum is σ = 706840020. Its totient is φ = 706840018.

The previous prime is 706840009. The next prime is 706840027. The reversal of 706840019 is 910048607.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 706840019 - 2¹² = 706835923 is a prime.

It is a super-2 number, since 2×706840019² = 999245624919840722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (706840009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353420009 + 353420010.

It is an arithmetic number, because the mean of its divisors is an integer number (353420010).

Almost surely, 2^706840019 is an apocalyptic number.

706840019 is a deficient number, since it is larger than the sum of its proper divisors (1).

706840019 is an equidigital number, since it uses as much as digits as its factorization.

706840019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 706840019 is about 26586.4630780403. The cubic root of 706840019 is about 890.7866709508.

The spelling of 706840019 in words is "seven hundred six million, eight hundred forty thousand, nineteen".