178879 has 4 divisors (see below), whose sum is σ = 180576. Its totient is φ = 177184.

The previous prime is 178877. The next prime is 178889. The reversal of 178879 is 978871.

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

It is not a de Polignac number, because 178879 - 2¹ = 178877 is a prime.

It is a Duffinian number.

178879 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (178873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 679 + ... + 904.

It is an arithmetic number, because the mean of its divisors is an integer number (45144).

2¹⁷⁸⁸⁷⁹ is an apocalyptic number.

178879 is a deficient number, since it is larger than the sum of its proper divisors (1697).

178879 is a wasteful number, since it uses less digits than its factorization.

178879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696.

The product of its digits is 28224, while the sum is 40.

The square root of 178879 is about 422.9408942157. The cubic root of 178879 is about 56.3447063002.

The spelling of 178879 in words is "one hundred seventy-eight thousand, eight hundred seventy-nine".