593391661 has 2 divisors, whose sum is σ = 593391662. Its totient is φ = 593391660.

The previous prime is 593391637. The next prime is 593391683. The reversal of 593391661 is 166193395.

593391661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 358382761 + 235008900 = 18931^2 + 15330^2 .

It is a cyclic number.

It is not a de Polignac number, because 593391661 - 2¹⁷ = 593260589 is a prime.

It is a super-2 number, since 2×593391661² = 704227326688677842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (593391611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 296695830 + 296695831.

It is an arithmetic number, because the mean of its divisors is an integer number (296695831).

Almost surely, 2^593391661 is an apocalyptic number.

It is an amenable number.

593391661 is a deficient number, since it is larger than the sum of its proper divisors (1).

593391661 is an equidigital number, since it uses as much as digits as its factorization.

593391661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131220, while the sum is 43.

The square root of 593391661 is about 24359.6317911417. The cubic root of 593391661 is about 840.3247331952.

The spelling of 593391661 in words is "five hundred ninety-three million, three hundred ninety-one thousand, six hundred sixty-one".