998626 has 8 divisors (see below), whose sum is σ = 1526364. Its totient is φ = 489840.

The previous prime is 998623. The next prime is 998629. The reversal of 998626 is 626899.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (998623) and next prime (998629).

It can be written as a sum of positive squares in 2 ways, for example, as 998001 + 625 = 999^2 + 25^2 .

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

It is not an unprimeable number, because it can be changed into a prime (998623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4605 + ... + 4816.

2⁹⁹⁸⁶²⁶ is an apocalyptic number.

998626 is a deficient number, since it is larger than the sum of its proper divisors (527738).

998626 is a wasteful number, since it uses less digits than its factorization.

998626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9476.

The product of its digits is 46656, while the sum is 40.

The square root of 998626 is about 999.3127638532. The cubic root of 998626 is about 99.9541790076.

The spelling of 998626 in words is "nine hundred ninety-eight thousand, six hundred twenty-six".