1689080 has 16 divisors (see below), whose sum is σ = 3800520. Its totient is φ = 675616.

The previous prime is 1689071. The next prime is 1689109. The reversal of 1689080 is 809861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21074 + ... + 21153.

2^1689080 is an apocalyptic number.

1689080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1689080 is an abundant number, since it is smaller than the sum of its proper divisors (2111440).

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

1689080 is a wasteful number, since it uses less digits than its factorization.

1689080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42238 (or 42234 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 1689080 is about 1299.6461056765. The cubic root of 1689080 is about 119.0922242501.

The spelling of 1689080 in words is "one million, six hundred eighty-nine thousand, eighty".