298681 has 2 divisors, whose sum is σ = 298682. Its totient is φ = 298680.

The previous prime is 298679. The next prime is 298687. The reversal of 298681 is 186892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241081 + 57600 = 491^2 + 240^2 .

It is a cyclic number.

It is not a de Polignac number, because 298681 - 2¹ = 298679 is a prime.

It is a super-2 number, since 2×298681² = 178420679522, which contains 22 as substring.

Together with 298679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (298687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149340 + 149341.

It is an arithmetic number, because the mean of its divisors is an integer number (149341).

2²⁹⁸⁶⁸¹ is an apocalyptic number.

It is an amenable number.

298681 is a deficient number, since it is larger than the sum of its proper divisors (1).

298681 is an equidigital number, since it uses as much as digits as its factorization.

298681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 298681 is about 546.5171543511. The cubic root of 298681 is about 66.8450417537.

It can be divided in two parts, 298 and 681, that added together give a palindrome (979).

The spelling of 298681 in words is "two hundred ninety-eight thousand, six hundred eighty-one".