689388904 has 16 divisors (see below), whose sum is σ = 1292965920. Its totient is φ = 344598000.

The previous prime is 689388901. The next prime is 689388907. The reversal of 689388904 is 409883986.

689388904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (689388901) and next prime (689388907).

It is not an unprimeable number, because it can be changed into a prime (689388901) 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, 25029 + ... + 44779.

It is an arithmetic number, because the mean of its divisors is an integer number (80810370).

Almost surely, 2^689388904 is an apocalyptic number.

It is an amenable number.

689388904 is a deficient number, since it is larger than the sum of its proper divisors (603577016).

689388904 is a wasteful number, since it uses less digits than its factorization.

689388904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24120 (or 24116 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 55.

The square root of 689388904 is about 26256.2164829588. The cubic root of 689388904 is about 883.3946463987.

The spelling of 689388904 in words is "six hundred eighty-nine million, three hundred eighty-eight thousand, nine hundred four".