605665331 has 2 divisors, whose sum is σ = 605665332. Its totient is φ = 605665330.

The previous prime is 605665303. The next prime is 605665351. The reversal of 605665331 is 133566506.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 605665331 - 2²² = 601471027 is a prime.

It is a super-2 number, since 2×605665331² = 733660986350679122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 605665291 and 605665300.

It is not a weakly prime, because it can be changed into another prime (605665301) 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, 302832665 + 302832666.

It is an arithmetic number, because the mean of its divisors is an integer number (302832666).

Almost surely, 2^605665331 is an apocalyptic number.

605665331 is a deficient number, since it is larger than the sum of its proper divisors (1).

605665331 is an equidigital number, since it uses as much as digits as its factorization.

605665331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 605665331 is about 24610.2688120224. The cubic root of 605665331 is about 846.0789787981.

The spelling of 605665331 in words is "six hundred five million, six hundred sixty-five thousand, three hundred thirty-one".