220000073 has 2 divisors, whose sum is σ = 220000074. Its totient is φ = 220000072.

The previous prime is 220000051. The next prime is 220000141. The reversal of 220000073 is 370000022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209294089 + 10705984 = 14467^2 + 3272^2 .

It is a cyclic number.

It is not a de Polignac number, because 220000073 - 2¹⁰ = 219999049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (220000013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110000036 + 110000037.

It is an arithmetic number, because the mean of its divisors is an integer number (110000037).

Almost surely, 2^220000073 is an apocalyptic number.

It is an amenable number.

220000073 is a deficient number, since it is larger than the sum of its proper divisors (1).

220000073 is an equidigital number, since it uses as much as digits as its factorization.

220000073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 220000073 is about 14832.3994350206. The cubic root of 220000073 is about 603.6811404505.

Adding to 220000073 its reverse (370000022), we get a palindrome (590000095).

The spelling of 220000073 in words is "two hundred twenty million, seventy-three", and thus it is an aban number.