605623121 has 2 divisors, whose sum is σ = 605623122. Its totient is φ = 605623120.

The previous prime is 605623027. The next prime is 605623129. The reversal of 605623121 is 121326506.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 518928400 + 86694721 = 22780^2 + 9311^2 .

It is a cyclic number.

It is not a de Polignac number, because 605623121 - 2¹⁰ = 605622097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (605623129) 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, 302811560 + 302811561.

It is an arithmetic number, because the mean of its divisors is an integer number (302811561).

Almost surely, 2^605623121 is an apocalyptic number.

It is an amenable number.

605623121 is a deficient number, since it is larger than the sum of its proper divisors (1).

605623121 is an equidigital number, since it uses as much as digits as its factorization.

605623121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 605623121 is about 24609.4112282273. The cubic root of 605623121 is about 846.0593233759.

Adding to 605623121 its reverse (121326506), we get a palindrome (726949627).

The spelling of 605623121 in words is "six hundred five million, six hundred twenty-three thousand, one hundred twenty-one".