606686393 has 2 divisors, whose sum is σ = 606686394. Its totient is φ = 606686392.

The previous prime is 606686371. The next prime is 606686413. The reversal of 606686393 is 393686606.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320839744 + 285846649 = 17912^2 + 16907^2 .

It is a cyclic number.

It is not a de Polignac number, because 606686393 - 2²⁸ = 338250937 is a prime.

It is not a weakly prime, because it can be changed into another prime (606686303) 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, 303343196 + 303343197.

It is an arithmetic number, because the mean of its divisors is an integer number (303343197).

Almost surely, 2^606686393 is an apocalyptic number.

It is an amenable number.

606686393 is a deficient number, since it is larger than the sum of its proper divisors (1).

606686393 is an equidigital number, since it uses as much as digits as its factorization.

606686393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 839808, while the sum is 47.

The square root of 606686393 is about 24631.0047095120. The cubic root of 606686393 is about 846.5541664612.

The spelling of 606686393 in words is "six hundred six million, six hundred eighty-six thousand, three hundred ninety-three".