228679 has 4 divisors (see below), whose sum is σ = 249480. Its totient is φ = 207880.

The previous prime is 228677. The next prime is 228707. The reversal of 228679 is 976822.

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

It is a cyclic number.

It is not a de Polignac number, because 228679 - 2¹ = 228677 is a prime.

228679 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10384 + ... + 10405.

It is an arithmetic number, because the mean of its divisors is an integer number (62370).

2²²⁸⁶⁷⁹ is an apocalyptic number.

228679 is a deficient number, since it is larger than the sum of its proper divisors (20801).

228679 is a wasteful number, since it uses less digits than its factorization.

228679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20800.

The product of its digits is 12096, while the sum is 34.

The square root of 228679 is about 478.2039313933. The cubic root of 228679 is about 61.1517319158.

The spelling of 228679 in words is "two hundred twenty-eight thousand, six hundred seventy-nine".