597997 has 2 divisors, whose sum is σ = 597998. Its totient is φ = 597996.

The previous prime is 597967. The next prime is 598007. The reversal of 597997 is 799795.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 373321 + 224676 = 611^2 + 474^2 .

It is a cyclic number.

It is not a de Polignac number, because 597997 - 2⁷ = 597869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (597967) 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, 298998 + 298999.

It is an arithmetic number, because the mean of its divisors is an integer number (298999).

2⁵⁹⁷⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

597997 is a deficient number, since it is larger than the sum of its proper divisors (1).

597997 is an equidigital number, since it uses as much as digits as its factorization.

597997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 178605, while the sum is 46.

The square root of 597997 is about 773.3026574376. The cubic root of 597997 is about 84.2493065832.

The spelling of 597997 in words is "five hundred ninety-seven thousand, nine hundred ninety-seven".