730602221 has 2 divisors, whose sum is σ = 730602222. Its totient is φ = 730602220.

The previous prime is 730602167. The next prime is 730602241. The reversal of 730602221 is 122206037.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 588062500 + 142539721 = 24250^2 + 11939^2 .

It is an emirp because it is prime and its reverse (122206037) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 730602221 - 2²² = 726407917 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 (730602241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365301110 + 365301111.

It is an arithmetic number, because the mean of its divisors is an integer number (365301111).

Almost surely, 2^730602221 is an apocalyptic number.

It is an amenable number.

730602221 is a deficient number, since it is larger than the sum of its proper divisors (1).

730602221 is an equidigital number, since it uses as much as digits as its factorization.

730602221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 730602221 is about 27029.6544742991. The cubic root of 730602221 is about 900.6588677473.

Adding to 730602221 its reverse (122206037), we get a palindrome (852808258).

The spelling of 730602221 in words is "seven hundred thirty million, six hundred two thousand, two hundred twenty-one".