1689006 has 32 divisors (see below), whose sum is σ = 3731328. Its totient is φ = 505440.

The previous prime is 1688987. The next prime is 1689031. The reversal of 1689006 is 6009861.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10281 + ... + 10443.

It is an arithmetic number, because the mean of its divisors is an integer number (116604).

2^1689006 is an apocalyptic number.

1689006 is an abundant number, since it is smaller than the sum of its proper divisors (2042322).

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

1689006 is a wasteful number, since it uses less digits than its factorization.

1689006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1689006 is about 1299.6176360761. The cubic root of 1689006 is about 119.0904850483.

The spelling of 1689006 in words is "one million, six hundred eighty-nine thousand, six".