606581 has 2 divisors, whose sum is σ = 606582. Its totient is φ = 606580.

The previous prime is 606569. The next prime is 606587. The reversal of 606581 is 185606.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320356 + 286225 = 566^2 + 535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-606581 is a prime.

It is a super-2 number, since 2×606581² = 735881019122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 606581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (606587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303290 + 303291.

It is an arithmetic number, because the mean of its divisors is an integer number (303291).

2⁶⁰⁶⁵⁸¹ is an apocalyptic number.

It is an amenable number.

606581 is a deficient number, since it is larger than the sum of its proper divisors (1).

606581 is an equidigital number, since it uses as much as digits as its factorization.

606581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 606581 is about 778.8331015051. The cubic root of 606581 is about 84.6505142753.

The spelling of 606581 in words is "six hundred six thousand, five hundred eighty-one".