605166643 has 2 divisors, whose sum is σ = 605166644. Its totient is φ = 605166642.

The previous prime is 605166619. The next prime is 605166647. The reversal of 605166643 is 346661506.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 605166643 - 2²¹ = 603069491 is a prime.

It is not a weakly prime, because it can be changed into another prime (605166647) 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, 302583321 + 302583322.

It is an arithmetic number, because the mean of its divisors is an integer number (302583322).

Almost surely, 2^605166643 is an apocalyptic number.

605166643 is a deficient number, since it is larger than the sum of its proper divisors (1).

605166643 is an equidigital number, since it uses as much as digits as its factorization.

605166643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 605166643 is about 24600.1350199547. The cubic root of 605166643 is about 845.8467023979.

The spelling of 605166643 in words is "six hundred five million, one hundred sixty-six thousand, six hundred forty-three".