754866221 has 2 divisors, whose sum is σ = 754866222. Its totient is φ = 754866220.

The previous prime is 754866199. The next prime is 754866253. The reversal of 754866221 is 122668457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 750157321 + 4708900 = 27389^2 + 2170^2 .

It is a cyclic number.

It is not a de Polignac number, because 754866221 - 2¹⁰ = 754865197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (754866821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 377433110 + 377433111.

It is an arithmetic number, because the mean of its divisors is an integer number (377433111).

Almost surely, 2^754866221 is an apocalyptic number.

It is an amenable number.

754866221 is a deficient number, since it is larger than the sum of its proper divisors (1).

754866221 is an equidigital number, since it uses as much as digits as its factorization.

754866221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 41.

The square root of 754866221 is about 27474.8288620694. The cubic root of 754866221 is about 910.5210641396.

The spelling of 754866221 in words is "seven hundred fifty-four million, eight hundred sixty-six thousand, two hundred twenty-one".