998065 has 8 divisors (see below), whose sum is σ = 1203048. Its totient is φ = 794880.

The previous prime is 998029. The next prime is 998069. The reversal of 998065 is 560899.

It can be written as a sum of positive squares in 4 ways, for example, as 64 + 998001 = 8^2 + 999^2 .

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

It is not a de Polignac number, because 998065 - 2⁹ = 997553 is a prime.

It is a super-2 number, since 2×998065² = 1992267488450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1935 + ... + 2395.

It is an arithmetic number, because the mean of its divisors is an integer number (150381).

2⁹⁹⁸⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

998065 is a deficient number, since it is larger than the sum of its proper divisors (204983).

998065 is a wasteful number, since it uses less digits than its factorization.

998065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 998065 is about 999.0320315185. The cubic root of 998065 is about 99.9354583527.

The spelling of 998065 in words is "nine hundred ninety-eight thousand, sixty-five".