998237 has 2 divisors, whose sum is σ = 998238. Its totient is φ = 998236.

The previous prime is 998219. The next prime is 998243. The reversal of 998237 is 732899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 988036 + 10201 = 994^2 + 101^2 .

It is a cyclic number.

It is not a de Polignac number, because 998237 - 2¹² = 994141 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 998237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499118 + 499119.

It is an arithmetic number, because the mean of its divisors is an integer number (499119).

2⁹⁹⁸²³⁷ is an apocalyptic number.

It is an amenable number.

998237 is a deficient number, since it is larger than the sum of its proper divisors (1).

998237 is an equidigital number, since it uses as much as digits as its factorization.

998237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 998237 is about 999.1181111360. The cubic root of 998237 is about 99.9411987643.

The spelling of 998237 in words is "nine hundred ninety-eight thousand, two hundred thirty-seven".