1689608 has 16 divisors (see below), whose sum is σ = 3194880. Its totient is φ = 837648.

The previous prime is 1689607. The next prime is 1689617. The reversal of 1689608 is 8069861.

It is not an unprimeable number, because it can be changed into a prime (1689601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185 + ... + 1847.

It is an arithmetic number, because the mean of its divisors is an integer number (199680).

2^1689608 is an apocalyptic number.

It is an amenable number.

1689608 is a deficient number, since it is larger than the sum of its proper divisors (1505272).

1689608 is a wasteful number, since it uses less digits than its factorization.

1689608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796 (or 1792 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1689608 is about 1299.8492220254. The cubic root of 1689608 is about 119.1046322165.

The spelling of 1689608 in words is "one million, six hundred eighty-nine thousand, six hundred eight".