998055 has 16 divisors (see below), whose sum is σ = 1774560. Its totient is φ = 532224.

The previous prime is 998029. The next prime is 998069. The reversal of 998055 is 550899.

It is not a de Polignac number, because 998055 - 2⁶ = 997991 is a prime.

It is a super-2 number, since 2×998055² = 1992227566050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

998055 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998055.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3562 + ... + 3831.

It is an arithmetic number, because the mean of its divisors is an integer number (110910).

2⁹⁹⁸⁰⁵⁵ is an apocalyptic number.

998055 is a deficient number, since it is larger than the sum of its proper divisors (776505).

998055 is a wasteful number, since it uses less digits than its factorization.

998055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7407 (or 7401 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 998055 is about 999.0270266614. The cubic root of 998055 is about 99.9351245876.

The spelling of 998055 in words is "nine hundred ninety-eight thousand, fifty-five".