298861 has 2 divisors, whose sum is σ = 298862. Its totient is φ = 298860.

The previous prime is 298853. The next prime is 298897. The reversal of 298861 is 168892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281961 + 16900 = 531^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 298861 - 2³ = 298853 is a prime.

It is a super-3 number, since 3×298861³ = 80080908333754143, which contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (298801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149430 + 149431.

It is an arithmetic number, because the mean of its divisors is an integer number (149431).

2²⁹⁸⁸⁶¹ is an apocalyptic number.

It is an amenable number.

298861 is a deficient number, since it is larger than the sum of its proper divisors (1).

298861 is an equidigital number, since it uses as much as digits as its factorization.

298861 is an odious number, because the sum of its binary digits is odd.

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

The square root of 298861 is about 546.6818087334. The cubic root of 298861 is about 66.8584671041.

The spelling of 298861 in words is "two hundred ninety-eight thousand, eight hundred sixty-one".