220563643 has 4 divisors (see below), whose sum is σ = 220677408. Its totient is φ = 220449880.

The previous prime is 220563631. The next prime is 220563649. The reversal of 220563643 is 346365022.

It is a happy number.

220563643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 220563643 - 2⁵ = 220563611 is a prime.

It is a super-2 number, since 2×220563643² = 97296641226862898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220563649) 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, 53923 + ... + 57868.

It is an arithmetic number, because the mean of its divisors is an integer number (55169352).

Almost surely, 2^220563643 is an apocalyptic number.

220563643 is a deficient number, since it is larger than the sum of its proper divisors (113765).

220563643 is a wasteful number, since it uses less digits than its factorization.

220563643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113764.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 220563643 is about 14851.3852215879. The cubic root of 220563643 is about 604.1961804073.

The spelling of 220563643 in words is "two hundred twenty million, five hundred sixty-three thousand, six hundred forty-three".