179998 has 32 divisors (see below), whose sum is σ = 354816. Its totient is φ = 66528.

The previous prime is 179989. The next prime is 179999. The reversal of 179998 is 899971.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (179999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4165 + ... + 4207.

It is an arithmetic number, because the mean of its divisors is an integer number (11088).

2¹⁷⁹⁹⁹⁸ is an apocalyptic number.

179998 is a deficient number, since it is larger than the sum of its proper divisors (174818).

179998 is a wasteful number, since it uses less digits than its factorization.

179998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88.

The product of its digits is 40824, while the sum is 43.

The square root of 179998 is about 424.2617116828. The cubic root of 179998 is about 56.4619526130.

179998 divided by its sum of digits (43) gives a triangular number (4186 = T₉₁).

The spelling of 179998 in words is "one hundred seventy-nine thousand, nine hundred ninety-eight".