801998 has 8 divisors (see below), whose sum is σ = 1212192. Its totient is φ = 397936.

The previous prime is 801989. The next prime is 802007. The reversal of 801998 is 899108.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (801989) and next prime (802007).

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

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 801998.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190 + ... + 1737.

It is an arithmetic number, because the mean of its divisors is an integer number (151524).

2⁸⁰¹⁹⁹⁸ is an apocalyptic number.

801998 is a deficient number, since it is larger than the sum of its proper divisors (410194).

801998 is a wasteful number, since it uses less digits than its factorization.

801998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3066.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 801998 is about 895.5434104498. The cubic root of 801998 is about 92.9089948778.

The spelling of 801998 in words is "eight hundred one thousand, nine hundred ninety-eight".