1688363 has 2 divisors, whose sum is σ = 1688364. Its totient is φ = 1688362.

The previous prime is 1688341. The next prime is 1688369. The reversal of 1688363 is 3638861.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1688363 - 2⁶ = 1688299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1688369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 844181 + 844182.

It is an arithmetic number, because the mean of its divisors is an integer number (844182).

2^1688363 is an apocalyptic number.

1688363 is a deficient number, since it is larger than the sum of its proper divisors (1).

1688363 is an equidigital number, since it uses as much as digits as its factorization.

1688363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 1688363 is about 1299.3702320740. The cubic root of 1688363 is about 119.0753706553.

The spelling of 1688363 in words is "one million, six hundred eighty-eight thousand, three hundred sixty-three".