1689713 has 2 divisors, whose sum is σ = 1689714. Its totient is φ = 1689712.

The previous prime is 1689707. The next prime is 1689719. The reversal of 1689713 is 3179861.

It is a balanced prime because it is at equal distance from previous prime (1689707) and next prime (1689719).

It can be written as a sum of positive squares in only one way, i.e., 1669264 + 20449 = 1292^2 + 143^2 .

It is a cyclic number.

It is not a de Polignac number, because 1689713 - 2¹² = 1685617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1689719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 844856 + 844857.

It is an arithmetic number, because the mean of its divisors is an integer number (844857).

2^1689713 is an apocalyptic number.

It is an amenable number.

1689713 is a deficient number, since it is larger than the sum of its proper divisors (1).

1689713 is an equidigital number, since it uses as much as digits as its factorization.

1689713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 35.

The square root of 1689713 is about 1299.8896106978. The cubic root of 1689713 is about 119.1070994017.

The spelling of 1689713 in words is "one million, six hundred eighty-nine thousand, seven hundred thirteen".