220992773 has 2 divisors, whose sum is σ = 220992774. Its totient is φ = 220992772.

The previous prime is 220992757. The next prime is 220992787. The reversal of 220992773 is 377299022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183819364 + 37173409 = 13558^2 + 6097^2 .

It is a cyclic number.

It is not a de Polignac number, because 220992773 - 2⁴ = 220992757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220992773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220992703) 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 as a sum of consecutive naturals, namely, 110496386 + 110496387.

It is an arithmetic number, because the mean of its divisors is an integer number (110496387).

Almost surely, 2^220992773 is an apocalyptic number.

It is an amenable number.

220992773 is a deficient number, since it is larger than the sum of its proper divisors (1).

220992773 is an equidigital number, since it uses as much as digits as its factorization.

220992773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 220992773 is about 14865.8256750172. The cubic root of 220992773 is about 604.5877691773.

The spelling of 220992773 in words is "two hundred twenty million, nine hundred ninety-two thousand, seven hundred seventy-three".