605987 has 2 divisors, whose sum is σ = 605988. Its totient is φ = 605986.

The previous prime is 605977. The next prime is 605993. The reversal of 605987 is 789506.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-605987 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 605987.

It is not a weakly prime, because it can be changed into another prime (605947) 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, 302993 + 302994.

It is an arithmetic number, because the mean of its divisors is an integer number (302994).

2⁶⁰⁵⁹⁸⁷ is an apocalyptic number.

605987 is a deficient number, since it is larger than the sum of its proper divisors (1).

605987 is an equidigital number, since it uses as much as digits as its factorization.

605987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 605987 is about 778.4516683777. The cubic root of 605987 is about 84.6228736537.

The spelling of 605987 in words is "six hundred five thousand, nine hundred eighty-seven".