220963 has 4 divisors (see below), whose sum is σ = 223840. Its totient is φ = 218088.
The previous prime is 220939. The next prime is 220973. The reversal of 220963 is 369022.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 369022 = 2 ⋅184511.
It is a cyclic number.
It is not a de Polignac number, because 220963 - 25 = 220931 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (220903) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1320 + ... + 1477.
It is an arithmetic number, because the mean of its divisors is an integer number (55960).
2220963 is an apocalyptic number.
220963 is a deficient number, since it is larger than the sum of its proper divisors (2877).
220963 is an equidigital number, since it uses as much as digits as its factorization.
220963 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2876.
The product of its (nonzero) digits is 648, while the sum is 22.
The square root of 220963 is about 470.0670164987. The cubic root of 220963 is about 60.4560617158.
Adding to 220963 its reverse (369022), we get a palindrome (589985).
The spelling of 220963 in words is "two hundred twenty thousand, nine hundred sixty-three".
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