1689036 has 24 divisors (see below), whose sum is σ = 4038384. Its totient is φ = 549120.

The previous prime is 1689031. The next prime is 1689049. The reversal of 1689036 is 6309861.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1688988 and 1689006.

It is not an unprimeable number, because it can be changed into a prime (1689031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1225 + ... + 2208.

It is an arithmetic number, because the mean of its divisors is an integer number (168266).

2^1689036 is an apocalyptic number.

It is an amenable number.

1689036 is an abundant number, since it is smaller than the sum of its proper divisors (2349348).

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

1689036 is a wasteful number, since it uses less digits than its factorization.

1689036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481 (or 3479 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1689036 is about 1299.6291778811. The cubic root of 1689036 is about 119.0911901362.

The spelling of 1689036 in words is "one million, six hundred eighty-nine thousand, thirty-six".