1968563 has 2 divisors, whose sum is σ = 1968564. Its totient is φ = 1968562.

The previous prime is 1968541. The next prime is 1968569. The reversal of 1968563 is 3658691.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1968563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1968569) 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, 984281 + 984282.

It is an arithmetic number, because the mean of its divisors is an integer number (984282).

2^1968563 is an apocalyptic number.

1968563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1968563 is an equidigital number, since it uses as much as digits as its factorization.

1968563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 38.

The square root of 1968563 is about 1403.0548813215. The cubic root of 1968563 is about 125.3284800507.

The spelling of 1968563 in words is "one million, nine hundred sixty-eight thousand, five hundred sixty-three".