1689996 has 96 divisors (see below), whose sum is σ = 5160960. Its totient is φ = 417600.

The previous prime is 1689967. The next prime is 1690009. The reversal of 1689996 is 6999861.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28615 + ... + 28673.

It is an arithmetic number, because the mean of its divisors is an integer number (53760).

2^1689996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1689996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2580480).

1689996 is an abundant number, since it is smaller than the sum of its proper divisors (3470964).

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

1689996 is a wasteful number, since it uses less digits than its factorization.

1689996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 113 counting only the distinct ones).

The product of its digits is 209952, while the sum is 48.

The square root of 1689996 is about 1299.9984615376. The cubic root of 1689996 is about 119.1137485442.

The spelling of 1689996 in words is "one million, six hundred eighty-nine thousand, nine hundred ninety-six".