689228 has 6 divisors (see below), whose sum is σ = 1206156. Its totient is φ = 344612.

The previous prime is 689219. The next prime is 689233. The reversal of 689228 is 822986.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86150 + ... + 86157.

It is an arithmetic number, because the mean of its divisors is an integer number (201026).

2⁶⁸⁹²²⁸ is an apocalyptic number.

It is an amenable number.

689228 is a deficient number, since it is larger than the sum of its proper divisors (516928).

689228 is a wasteful number, since it uses less digits than its factorization.

689228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172311 (or 172309 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 689228 is about 830.1975668478. The cubic root of 689228 is about 88.3325912678.

The spelling of 689228 in words is "six hundred eighty-nine thousand, two hundred twenty-eight".