220567 has 4 divisors (see below), whose sum is σ = 221536. Its totient is φ = 219600.

The previous prime is 220559. The next prime is 220573. The reversal of 220567 is 765022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 765022 = 2 ⋅382511.

It is a cyclic number.

It is not a de Polignac number, because 220567 - 2³ = 220559 is a prime.

It is a Duffinian number.

220567 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220537) 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, 67 + ... + 667.

It is an arithmetic number, because the mean of its divisors is an integer number (55384).

2²²⁰⁵⁶⁷ is an apocalyptic number.

220567 is a deficient number, since it is larger than the sum of its proper divisors (969).

220567 is an equidigital number, since it uses as much as digits as its factorization.

220567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 220567 is about 469.6456110729. The cubic root of 220567 is about 60.4199245700.

Adding to 220567 its reverse (765022), we get a palindrome (985589).

It can be divided in two parts, 220 and 567, that added together give a palindrome (787).

The spelling of 220567 in words is "two hundred twenty thousand, five hundred sixty-seven".