1689925 has 12 divisors (see below), whose sum is σ = 2187360. Its totient is φ = 1292720.

The previous prime is 1689923. The next prime is 1689929. The reversal of 1689925 is 5299861.

It is not a de Polignac number, because 1689925 - 2¹ = 1689923 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 895 + ... + 2044.

It is an arithmetic number, because the mean of its divisors is an integer number (182280).

2^1689925 is an apocalyptic number.

It is an amenable number.

1689925 is a deficient number, since it is larger than the sum of its proper divisors (497435).

1689925 is a wasteful number, since it uses less digits than its factorization.

1689925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972 (or 2967 counting only the distinct ones).

The product of its digits is 38880, while the sum is 40.

The square root of 1689925 is about 1299.9711535261. The cubic root of 1689925 is about 119.1120804545.

The spelling of 1689925 in words is "one million, six hundred eighty-nine thousand, nine hundred twenty-five".