605993 has 2 divisors, whose sum is σ = 605994. Its totient is φ = 605992.

The previous prime is 605987. The next prime is 606017. The reversal of 605993 is 399506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 597529 + 8464 = 773^2 + 92^2 .

It is a cyclic number.

It is not a de Polignac number, because 605993 - 2⁴ = 605977 is a prime.

It is not a weakly prime, because it can be changed into another prime (605933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302996 + 302997.

It is an arithmetic number, because the mean of its divisors is an integer number (302997).

2⁶⁰⁵⁹⁹³ is an apocalyptic number.

It is an amenable number.

605993 is a deficient number, since it is larger than the sum of its proper divisors (1).

605993 is an equidigital number, since it uses as much as digits as its factorization.

605993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 605993 is about 778.4555221719. The cubic root of 605993 is about 84.6231529422.

The spelling of 605993 in words is "six hundred five thousand, nine hundred ninety-three".