1689245 has 8 divisors (see below), whose sum is σ = 2043360. Its totient is φ = 1340560.

The previous prime is 1689217. The next prime is 1689253. The reversal of 1689245 is 5429861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1689245 - 2¹⁴ = 1672861 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635 + ... + 1944.

It is an arithmetic number, because the mean of its divisors is an integer number (255420).

2^1689245 is an apocalyptic number.

It is an amenable number.

1689245 is a deficient number, since it is larger than the sum of its proper divisors (354115).

1689245 is a wasteful number, since it uses less digits than its factorization.

1689245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715.

The product of its digits is 17280, while the sum is 35.

The square root of 1689245 is about 1299.7095829454. The cubic root of 1689245 is about 119.0961020174.

The spelling of 1689245 in words is "one million, six hundred eighty-nine thousand, two hundred forty-five".