966221 has 2 divisors, whose sum is σ = 966222. Its totient is φ = 966220.

The previous prime is 966211. The next prime is 966227. The reversal of 966221 is 122669.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 592900 + 373321 = 770^2 + 611^2 .

It is a cyclic number.

It is not a de Polignac number, because 966221 - 2⁶ = 966157 is a prime.

It is a Chen prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (966227) 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, 483110 + 483111.

It is an arithmetic number, because the mean of its divisors is an integer number (483111).

2⁹⁶⁶²²¹ is an apocalyptic number.

It is an amenable number.

966221 is a deficient number, since it is larger than the sum of its proper divisors (1).

966221 is an equidigital number, since it uses as much as digits as its factorization.

966221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 26.

The square root of 966221 is about 982.9654113955. The cubic root of 966221 is about 98.8611119130.

The spelling of 966221 in words is "nine hundred sixty-six thousand, two hundred twenty-one".