598981 has 2 divisors, whose sum is σ = 598982. Its totient is φ = 598980.

The previous prime is 598973. The next prime is 598987. The reversal of 598981 is 189895.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 562500 + 36481 = 750^2 + 191^2 .

It is a cyclic number.

It is not a de Polignac number, because 598981 - 2³ = 598973 is a prime.

It is a super-2 number, since 2×598981² = 717556476722, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 598981.

It is not a weakly prime, because it can be changed into another prime (598987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 299490 + 299491.

It is an arithmetic number, because the mean of its divisors is an integer number (299491).

2⁵⁹⁸⁹⁸¹ is an apocalyptic number.

It is an amenable number.

598981 is a deficient number, since it is larger than the sum of its proper divisors (1).

598981 is an equidigital number, since it uses as much as digits as its factorization.

598981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 40.

The square root of 598981 is about 773.9386280578. The cubic root of 598981 is about 84.2954918138.

The spelling of 598981 in words is "five hundred ninety-eight thousand, nine hundred eighty-one".