1689319 has 2 divisors, whose sum is σ = 1689320. Its totient is φ = 1689318.

The previous prime is 1689287. The next prime is 1689343. The reversal of 1689319 is 9139861.

It is a strong prime.

It is an emirp because it is prime and its reverse (9139861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1689319 - 2⁵ = 1689287 is a prime.

It is a super-2 number, since 2×1689319² = 5707597367522, which contains 22 as substring.

1689319 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1689379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 844659 + 844660.

It is an arithmetic number, because the mean of its divisors is an integer number (844660).

2^1689319 is an apocalyptic number.

1689319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1689319 is an equidigital number, since it uses as much as digits as its factorization.

1689319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 37.

The square root of 1689319 is about 1299.7380505317. The cubic root of 1689319 is about 119.0978410552.

The spelling of 1689319 in words is "one million, six hundred eighty-nine thousand, three hundred nineteen".