1689607 has 2 divisors, whose sum is σ = 1689608. Its totient is φ = 1689606.

The previous prime is 1689601. The next prime is 1689617. The reversal of 1689607 is 7069861.

It is a weak prime.

It is an emirp because it is prime and its reverse (7069861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1689607 - 2¹¹ = 1687559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1689601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 844803 + 844804.

It is an arithmetic number, because the mean of its divisors is an integer number (844804).

2^1689607 is an apocalyptic number.

1689607 is a deficient number, since it is larger than the sum of its proper divisors (1).

1689607 is an equidigital number, since it uses as much as digits as its factorization.

1689607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 1689607 is about 1299.8488373653. The cubic root of 1689607 is about 119.1046087190.

The spelling of 1689607 in words is "one million, six hundred eighty-nine thousand, six hundred seven".