220628071 has 2 divisors, whose sum is σ = 220628072. Its totient is φ = 220628070.

The previous prime is 220628069. The next prime is 220628087. The reversal of 220628071 is 170826022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220628071 - 2¹ = 220628069 is a prime.

Together with 220628069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220628021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110314035 + 110314036.

It is an arithmetic number, because the mean of its divisors is an integer number (110314036).

Almost surely, 2^220628071 is an apocalyptic number.

220628071 is a deficient number, since it is larger than the sum of its proper divisors (1).

220628071 is an equidigital number, since it uses as much as digits as its factorization.

220628071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 220628071 is about 14853.5541538044. The cubic root of 220628071 is about 604.2550044899.

The spelling of 220628071 in words is "two hundred twenty million, six hundred twenty-eight thousand, seventy-one".