2016563 has 4 divisors (see below), whose sum is σ = 2019648. Its totient is φ = 2013480.

The previous prime is 2016559. The next prime is 2016577. The reversal of 2016563 is 3656102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3656102 = 2 ⋅1828051.

It is a cyclic number.

It is not a de Polignac number, because 2016563 - 2² = 2016559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2016583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131 + ... + 2012.

It is an arithmetic number, because the mean of its divisors is an integer number (504912).

2^2016563 is an apocalyptic number.

2016563 is a deficient number, since it is larger than the sum of its proper divisors (3085).

2016563 is an equidigital number, since it uses as much as digits as its factorization.

2016563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2016563 is about 1420.0573932063. The cubic root of 2016563 is about 126.3389504831.

The spelling of 2016563 in words is "two million, sixteen thousand, five hundred sixty-three".