689880 has 32 divisors (see below), whose sum is σ = 2070000. Its totient is φ = 183936.

The previous prime is 689879. The next prime is 689891. The reversal of 689880 is 88986.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2755 + ... + 2994.

2⁶⁸⁹⁸⁸⁰ is an apocalyptic number.

689880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

689880 is an abundant number, since it is smaller than the sum of its proper divisors (1380120).

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

689880 is a wasteful number, since it uses less digits than its factorization.

689880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5763 (or 5759 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 689880 is about 830.5901516392. The cubic root of 689880 is about 88.3604362859.

The spelling of 689880 in words is "six hundred eighty-nine thousand, eight hundred eighty".