996563 has 2 divisors, whose sum is σ = 996564. Its totient is φ = 996562.

The previous prime is 996551. The next prime is 996571. The reversal of 996563 is 365699.

It is a strong prime.

It is an emirp because it is prime and its reverse (365699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 996563 - 2¹⁰ = 995539 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (996263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498281 + 498282.

It is an arithmetic number, because the mean of its divisors is an integer number (498282).

2⁹⁹⁶⁵⁶³ is an apocalyptic number.

996563 is a deficient number, since it is larger than the sum of its proper divisors (1).

996563 is an equidigital number, since it uses as much as digits as its factorization.

996563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740, while the sum is 38.

The square root of 996563 is about 998.2800208358. The cubic root of 996563 is about 99.8853018269.

The spelling of 996563 in words is "nine hundred ninety-six thousand, five hundred sixty-three".