1689488 has 20 divisors (see below), whose sum is σ = 3416448. Its totient is φ = 807840.

The previous prime is 1689451. The next prime is 1689497. The reversal of 1689488 is 8849861.

It is a happy 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, 1928 + ... + 2663.

2^1689488 is an apocalyptic number.

It is an amenable number.

1689488 is an abundant number, since it is smaller than the sum of its proper divisors (1726960).

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

1689488 is a wasteful number, since it uses less digits than its factorization.

1689488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4622 (or 4616 counting only the distinct ones).

The product of its digits is 110592, while the sum is 44.

The square root of 1689488 is about 1299.8030620059. The cubic root of 1689488 is about 119.1018124512.

The spelling of 1689488 in words is "one million, six hundred eighty-nine thousand, four hundred eighty-eight".