1689097 has 12 divisors (see below), whose sum is σ = 1840384. Its totient is φ = 1548360.

The previous prime is 1689071. The next prime is 1689109. The reversal of 1689097 is 7909861.

It is not a de Polignac number, because 1689097 - 2⁷ = 1688969 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1689067) 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, 16348 + ... + 16450.

2^1689097 is an apocalyptic number.

It is an amenable number.

1689097 is a deficient number, since it is larger than the sum of its proper divisors (151287).

1689097 is a wasteful number, since it uses less digits than its factorization.

1689097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 1689097 is about 1299.6526459020. The cubic root of 1689097 is about 119.0926237894.

The spelling of 1689097 in words is "one million, six hundred eighty-nine thousand, ninety-seven".