605321897 has 2 divisors, whose sum is σ = 605321898. Its totient is φ = 605321896.

The previous prime is 605321881. The next prime is 605321911. The reversal of 605321897 is 798123506.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 586172521 + 19149376 = 24211^2 + 4376^2 .

It is a cyclic number.

It is not a de Polignac number, because 605321897 - 2⁴ = 605321881 is a prime.

It is not a weakly prime, because it can be changed into another prime (605321867) 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, 302660948 + 302660949.

It is an arithmetic number, because the mean of its divisors is an integer number (302660949).

Almost surely, 2^605321897 is an apocalyptic number.

It is an amenable number.

605321897 is a deficient number, since it is larger than the sum of its proper divisors (1).

605321897 is an equidigital number, since it uses as much as digits as its factorization.

605321897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 605321897 is about 24603.2903693795. The cubic root of 605321897 is about 845.9190295037.

The spelling of 605321897 in words is "six hundred five million, three hundred twenty-one thousand, eight hundred ninety-seven".