606643 has 2 divisors, whose sum is σ = 606644. Its totient is φ = 606642.

The previous prime is 606607. The next prime is 606649. The reversal of 606643 is 346606.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 606643 - 2⁹ = 606131 is a prime.

It is not a weakly prime, because it can be changed into another prime (606649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303321 + 303322.

It is an arithmetic number, because the mean of its divisors is an integer number (303322).

2⁶⁰⁶⁶⁴³ is an apocalyptic number.

606643 is a deficient number, since it is larger than the sum of its proper divisors (1).

606643 is an equidigital number, since it uses as much as digits as its factorization.

606643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 606643 is about 778.8729036242. The cubic root of 606643 is about 84.6533982831.

The spelling of 606643 in words is "six hundred six thousand, six hundred forty-three".