1996563 has 16 divisors (see below), whose sum is σ = 2812320. Its totient is φ = 1257984.

The previous prime is 1996559. The next prime is 1996573. The reversal of 1996563 is 3656991.

It is not a de Polignac number, because 1996563 - 2² = 1996559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1996543) 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 in 15 ways as a sum of consecutive naturals, for example, 4395 + ... + 4827.

It is an arithmetic number, because the mean of its divisors is an integer number (175770).

2^1996563 is an apocalyptic number.

1996563 is a deficient number, since it is larger than the sum of its proper divisors (815757).

1996563 is a wasteful number, since it uses less digits than its factorization.

1996563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518.

The product of its digits is 43740, while the sum is 39.

The square root of 1996563 is about 1412.9978768562. The cubic root of 1996563 is about 125.9198911297.

The spelling of 1996563 in words is "one million, nine hundred ninety-six thousand, five hundred sixty-three".