606806393 has 2 divisors, whose sum is σ = 606806394. Its totient is φ = 606806392.

The previous prime is 606806371. The next prime is 606806461. The reversal of 606806393 is 393608606.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600838144 + 5968249 = 24512^2 + 2443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-606806393 is a prime.

It is a super-3 number, since 3×606806393³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 606806393.

It is not a weakly prime, because it can be changed into another prime (606806303) 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, 303403196 + 303403197.

It is an arithmetic number, because the mean of its divisors is an integer number (303403197).

Almost surely, 2^606806393 is an apocalyptic number.

It is an amenable number.

606806393 is a deficient number, since it is larger than the sum of its proper divisors (1).

606806393 is an equidigital number, since it uses as much as digits as its factorization.

606806393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 606806393 is about 24633.4405432940. The cubic root of 606806393 is about 846.6099777250.

The spelling of 606806393 in words is "six hundred six million, eight hundred six thousand, three hundred ninety-three".