1689359 has 4 divisors (see below), whose sum is σ = 1930704. Its totient is φ = 1448016.

The previous prime is 1689353. The next prime is 1689367. The reversal of 1689359 is 9539861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9539861 = 199 ⋅47939.

It is a cyclic number.

It is not a de Polignac number, because 1689359 - 2⁴ = 1689343 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689353) 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, 120662 + ... + 120675.

It is an arithmetic number, because the mean of its divisors is an integer number (482676).

2^1689359 is an apocalyptic number.

1689359 is a deficient number, since it is larger than the sum of its proper divisors (241345).

1689359 is an equidigital number, since it uses as much as digits as its factorization.

1689359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241344.

The product of its digits is 58320, while the sum is 41.

The square root of 1689359 is about 1299.7534381566. The cubic root of 1689359 is about 119.0987810545.

It can be divided in two parts, 1689 and 359, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 1689359 in words is "one million, six hundred eighty-nine thousand, three hundred fifty-nine".