998215 has 8 divisors (see below), whose sum is σ = 1205568. Its totient is φ = 793440.

The previous prime is 998213. The next prime is 998219. The reversal of 998215 is 512899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 998215 - 2¹ = 998213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354 + ... + 1456.

It is an arithmetic number, because the mean of its divisors is an integer number (150696).

2⁹⁹⁸²¹⁵ is an apocalyptic number.

998215 is a deficient number, since it is larger than the sum of its proper divisors (207353).

998215 is a wasteful number, since it uses less digits than its factorization.

998215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289.

The product of its digits is 6480, while the sum is 34.

The square root of 998215 is about 999.1071013660. The cubic root of 998215 is about 99.9404645624.

The spelling of 998215 in words is "nine hundred ninety-eight thousand, two hundred fifteen".