1689896 has 16 divisors (see below), whose sum is σ = 3412500. Its totient is φ = 779904.

The previous prime is 1689893. The next prime is 1689907. The reversal of 1689896 is 6989861.

It can be written as a sum of positive squares in 2 ways, for example, as 1653796 + 36100 = 1286^2 + 190^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1689896.

It is not an unprimeable number, because it can be changed into a prime (1689893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8021 + ... + 8228.

2^1689896 is an apocalyptic number.

It is an amenable number.

1689896 is an abundant number, since it is smaller than the sum of its proper divisors (1722604).

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

1689896 is a wasteful number, since it uses less digits than its factorization.

1689896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16268 (or 16264 counting only the distinct ones).

The product of its digits is 186624, while the sum is 47.

The square root of 1689896 is about 1299.9599993846. The cubic root of 1689896 is about 119.1113991086. Note that the first 3 decimals are identical.

The spelling of 1689896 in words is "one million, six hundred eighty-nine thousand, eight hundred ninety-six".