220973 has 2 divisors, whose sum is σ = 220974. Its totient is φ = 220972.

The previous prime is 220939. The next prime is 221021. The reversal of 220973 is 379022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162409 + 58564 = 403^2 + 242^2 .

It is a cyclic number.

It is not a de Polignac number, because 220973 - 2¹² = 216877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110486 + 110487.

It is an arithmetic number, because the mean of its divisors is an integer number (110487).

2²²⁰⁹⁷³ is an apocalyptic number.

It is an amenable number.

220973 is a deficient number, since it is larger than the sum of its proper divisors (1).

220973 is an equidigital number, since it uses as much as digits as its factorization.

220973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 220973 is about 470.0776531596. The cubic root of 220973 is about 60.4569737109.

Adding to 220973 its reverse (379022), we get a palindrome (599995).

The spelling of 220973 in words is "two hundred twenty thousand, nine hundred seventy-three".