80998 has 4 divisors (see below), whose sum is σ = 121500. Its totient is φ = 40498.

The previous prime is 80989. The next prime is 81001. The reversal of 80998 is 89908.

It is a semiprime because it is the product of two primes.

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, 20248 + ... + 20251.

It is an arithmetic number, because the mean of its divisors is an integer number (30375).

2⁸⁰⁹⁹⁸ is an apocalyptic number.

80998 is a deficient number, since it is larger than the sum of its proper divisors (40502).

80998 is a wasteful number, since it uses less digits than its factorization.

80998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40501.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 80998 is about 284.6014757516. The cubic root of 80998 is about 43.2671309953.

The spelling of 80998 in words is "eighty thousand, nine hundred ninety-eight".