1689712 has 10 divisors (see below), whose sum is σ = 3273848. Its totient is φ = 844848.

The previous prime is 1689707. The next prime is 1689713. The reversal of 1689712 is 2179861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52788 + ... + 52819.

2^1689712 is an apocalyptic number.

It is an amenable number.

1689712 is a deficient number, since it is larger than the sum of its proper divisors (1584136).

1689712 is a wasteful number, since it uses less digits than its factorization.

1689712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105615 (or 105609 counting only the distinct ones).

The product of its digits is 6048, while the sum is 34.

The square root of 1689712 is about 1299.8892260497. The cubic root of 1689712 is about 119.1070759051.

It can be divided in two parts, 1689 and 712, that added together give a 4-th power (2401 = 7⁴).

The spelling of 1689712 in words is "one million, six hundred eighty-nine thousand, seven hundred twelve".