605440987 has 2 divisors, whose sum is σ = 605440988. Its totient is φ = 605440986.

The previous prime is 605440931. The next prime is 605441003. The reversal of 605440987 is 789044506.

605440987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-605440987 is a prime.

It is not a weakly prime, because it can be changed into another prime (605440487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302720493 + 302720494.

It is an arithmetic number, because the mean of its divisors is an integer number (302720494).

Almost surely, 2^605440987 is an apocalyptic number.

605440987 is a deficient number, since it is larger than the sum of its proper divisors (1).

605440987 is an equidigital number, since it uses as much as digits as its factorization.

605440987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 605440987 is about 24605.7104550956. The cubic root of 605440987 is about 845.9745007562.

The spelling of 605440987 in words is "six hundred five million, four hundred forty thousand, nine hundred eighty-seven".