689900 has 18 divisors (see below), whose sum is σ = 1497300. Its totient is φ = 275920.

The previous prime is 689893. The next prime is 689903. The reversal of 689900 is 9986.

It is a happy number.

689900 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 (689903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3350 + ... + 3549.

2⁶⁸⁹⁹⁰⁰ is an apocalyptic number.

It is an amenable number.

689900 is an abundant number, since it is smaller than the sum of its proper divisors (807400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689900 is a wasteful number, since it uses less digits than its factorization.

689900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6913 (or 6906 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 689900 is about 830.6021911842. The cubic root of 689900 is about 88.3612901502.

The spelling of 689900 in words is "six hundred eighty-nine thousand, nine hundred".