598681 has 2 divisors, whose sum is σ = 598682. Its totient is φ = 598680.

The previous prime is 598669. The next prime is 598687. The reversal of 598681 is 186895.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 585225 + 13456 = 765^2 + 116^2 .

It is a cyclic number.

It is not a de Polignac number, because 598681 - 2⁵ = 598649 is a prime.

It is a super-2 number, since 2×598681² = 716837879522, which contains 22 as substring.

It is an Ulam number.

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 598681.

It is not a weakly prime, because it can be changed into another prime (598687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 299340 + 299341.

It is an arithmetic number, because the mean of its divisors is an integer number (299341).

2⁵⁹⁸⁶⁸¹ is an apocalyptic number.

It is an amenable number.

598681 is a deficient number, since it is larger than the sum of its proper divisors (1).

598681 is an equidigital number, since it uses as much as digits as its factorization.

598681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 598681 is about 773.7447899663. The cubic root of 598681 is about 84.2814163141.

The spelling of 598681 in words is "five hundred ninety-eight thousand, six hundred eighty-one".