689950 has 12 divisors (see below), whose sum is σ = 1283400. Its totient is φ = 275960.

The previous prime is 689929. The next prime is 689951. The reversal of 689950 is 59986.

689950 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689951) 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, 6850 + ... + 6949.

It is an arithmetic number, because the mean of its divisors is an integer number (106950).

2⁶⁸⁹⁹⁵⁰ is an apocalyptic number.

689950 is a deficient number, since it is larger than the sum of its proper divisors (593450).

689950 is a wasteful number, since it uses less digits than its factorization.

689950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13811 (or 13806 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 689950 is about 830.6322892833. The cubic root of 689950 is about 88.3634247387.

The spelling of 689950 in words is "six hundred eighty-nine thousand, nine hundred fifty".