605641 has 2 divisors, whose sum is σ = 605642. Its totient is φ = 605640.

The previous prime is 605639. The next prime is 605687. The reversal of 605641 is 146506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335241 + 270400 = 579^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 605641 - 2¹ = 605639 is a prime.

Together with 605639, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₄₉₅₃₁ and since 605641 and 49531 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (600641) 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, 302820 + 302821.

It is an arithmetic number, because the mean of its divisors is an integer number (302821).

2⁶⁰⁵⁶⁴¹ is an apocalyptic number.

It is an amenable number.

605641 is a deficient number, since it is larger than the sum of its proper divisors (1).

605641 is an equidigital number, since it uses as much as digits as its factorization.

605641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 605641 is about 778.2294006268. The cubic root of 605641 is about 84.6067648986.

The spelling of 605641 in words is "six hundred five thousand, six hundred forty-one".