734000221 has 2 divisors, whose sum is σ = 734000222. Its totient is φ = 734000220.

The previous prime is 734000207. The next prime is 734000227. The reversal of 734000221 is 122000437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 615734596 + 118265625 = 24814^2 + 10875^2 .

It is a cyclic number.

It is not a de Polignac number, because 734000221 - 2⁹ = 733999709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (734000227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 367000110 + 367000111.

It is an arithmetic number, because the mean of its divisors is an integer number (367000111).

Almost surely, 2^734000221 is an apocalyptic number.

It is an amenable number.

734000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

734000221 is an equidigital number, since it uses as much as digits as its factorization.

734000221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 734000221 is about 27092.4384469173. The cubic root of 734000221 is about 902.0530173539.

Adding to 734000221 its reverse (122000437), we get a palindrome (856000658).

The spelling of 734000221 in words is "seven hundred thirty-four million, two hundred twenty-one", and thus it is an aban number.