689828 has 24 divisors (see below), whose sum is σ = 1276800. Its totient is φ = 325728.

The previous prime is 689827. The next prime is 689831. The reversal of 689828 is 828986.

It is a happy number.

It is a super-4 number, since 4×689828⁴ (a number of 24 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (689827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8693 + ... + 8771.

It is an arithmetic number, because the mean of its divisors is an integer number (53200).

2⁶⁸⁹⁸²⁸ is an apocalyptic number.

It is an amenable number.

689828 is a deficient number, since it is larger than the sum of its proper divisors (586972).

689828 is a wasteful number, since it uses less digits than its factorization.

689828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 177 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 689828 is about 830.5588480054. The cubic root of 689828 is about 88.3582161616.

The spelling of 689828 in words is "six hundred eighty-nine thousand, eight hundred twenty-eight".