998726 has 4 divisors (see below), whose sum is σ = 1498092. Its totient is φ = 499362.

The previous prime is 998717. The next prime is 998737. The reversal of 998726 is 627899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 627899 = 293 ⋅2143.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249680 + ... + 249683.

It is an arithmetic number, because the mean of its divisors is an integer number (374523).

2⁹⁹⁸⁷²⁶ is an apocalyptic number.

998726 is a deficient number, since it is larger than the sum of its proper divisors (499366).

998726 is a wasteful number, since it uses less digits than its factorization.

998726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499365.

The product of its digits is 54432, while the sum is 41.

The square root of 998726 is about 999.3627969862. The cubic root of 998726 is about 99.9575152864.

The spelling of 998726 in words is "nine hundred ninety-eight thousand, seven hundred twenty-six".