689804 has 12 divisors (see below), whose sum is σ = 1213128. Its totient is φ = 343200.

The previous prime is 689803. The next prime is 689807. The reversal of 689804 is 408986.

It is not an unprimeable number, because it can be changed into a prime (689803) 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, 1064 + ... + 1584.

It is an arithmetic number, because the mean of its divisors is an integer number (101094).

2⁶⁸⁹⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

689804 is a deficient number, since it is larger than the sum of its proper divisors (523324).

689804 is a wasteful number, since it uses less digits than its factorization.

689804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856 (or 854 counting only the distinct ones).

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

The square root of 689804 is about 830.5443997764. The cubic root of 689804 is about 88.3571914512.

The spelling of 689804 in words is "six hundred eighty-nine thousand, eight hundred four".