595981 has 2 divisors, whose sum is σ = 595982. Its totient is φ = 595980.

The previous prime is 595967. The next prime is 596009. The reversal of 595981 is 189595.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320356 + 275625 = 566^2 + 525^2 .

It is a cyclic number.

It is not a de Polignac number, because 595981 - 2⁵ = 595949 is a prime.

It is a super-2 number, since 2×595981² = 710386704722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 595981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (595951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 297990 + 297991.

It is an arithmetic number, because the mean of its divisors is an integer number (297991).

2⁵⁹⁵⁹⁸¹ is an apocalyptic number.

It is an amenable number.

595981 is a deficient number, since it is larger than the sum of its proper divisors (1).

595981 is an equidigital number, since it uses as much as digits as its factorization.

595981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 37.

The square root of 595981 is about 771.9980569924. The cubic root of 595981 is about 84.1545247110.

The spelling of 595981 in words is "five hundred ninety-five thousand, nine hundred eighty-one".