998287 has 2 divisors, whose sum is σ = 998288. Its totient is φ = 998286.

The previous prime is 998281. The next prime is 998311. The reversal of 998287 is 782899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998287 - 2¹⁵ = 965519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499143 + 499144.

It is an arithmetic number, because the mean of its divisors is an integer number (499144).

2⁹⁹⁸²⁸⁷ is an apocalyptic number.

998287 is a deficient number, since it is larger than the sum of its proper divisors (1).

998287 is an equidigital number, since it uses as much as digits as its factorization.

998287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 43.

The square root of 998287 is about 999.1431328894. The cubic root of 998287 is about 99.9428673648.

The spelling of 998287 in words is "nine hundred ninety-eight thousand, two hundred eighty-seven".