689689804 has 6 divisors (see below), whose sum is σ = 1206957164. Its totient is φ = 344844900.

The previous prime is 689689769. The next prime is 689689807. The reversal of 689689804 is 408986986.

689689804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (689689807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86211222 + ... + 86211229.

Almost surely, 2^689689804 is an apocalyptic number.

It is an amenable number.

689689804 is a deficient number, since it is larger than the sum of its proper divisors (517267360).

689689804 is a wasteful number, since it uses less digits than its factorization.

689689804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172422455 (or 172422453 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 58.

The square root of 689689804 is about 26261.9459294242. The cubic root of 689689804 is about 883.5231538268.

The spelling of 689689804 in words is "six hundred eighty-nine million, six hundred eighty-nine thousand, eight hundred four".