220616563 has 4 divisors (see below), whose sum is σ = 221759848. Its totient is φ = 219473280.

The previous prime is 220616551. The next prime is 220616579. The reversal of 220616563 is 365616022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220616563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220616593) 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, 571353 + ... + 571738.

It is an arithmetic number, because the mean of its divisors is an integer number (55439962).

Almost surely, 2^220616563 is an apocalyptic number.

220616563 is a deficient number, since it is larger than the sum of its proper divisors (1143285).

220616563 is a wasteful number, since it uses less digits than its factorization.

220616563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143284.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 220616563 is about 14853.1667667202. The cubic root of 220616563 is about 604.2444982905.

It can be divided in two parts, 2206 and 16563, that added together give a square (18769 = 137²).

The spelling of 220616563 in words is "two hundred twenty million, six hundred sixteen thousand, five hundred sixty-three".