220766873 has 2 divisors, whose sum is σ = 220766874. Its totient is φ = 220766872.

The previous prime is 220766851. The next prime is 220766881. The reversal of 220766873 is 378667022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188595289 + 32171584 = 13733^2 + 5672^2 .

It is a cyclic number.

It is not a de Polignac number, because 220766873 - 2⁸ = 220766617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220766873.

It is not a weakly prime, because it can be changed into another prime (220726873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110383436 + 110383437.

It is an arithmetic number, because the mean of its divisors is an integer number (110383437).

Almost surely, 2^220766873 is an apocalyptic number.

It is an amenable number.

220766873 is a deficient number, since it is larger than the sum of its proper divisors (1).

220766873 is an equidigital number, since it uses as much as digits as its factorization.

220766873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 220766873 is about 14858.2257689133. The cubic root of 220766873 is about 604.3816946558.

The spelling of 220766873 in words is "two hundred twenty million, seven hundred sixty-six thousand, eight hundred seventy-three".