730638253 has 2 divisors, whose sum is σ = 730638254. Its totient is φ = 730638252.

The previous prime is 730638229. The next prime is 730638281. The reversal of 730638253 is 352836037.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 560126889 + 170511364 = 23667^2 + 13058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-730638253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (730638553) 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, 365319126 + 365319127.

It is an arithmetic number, because the mean of its divisors is an integer number (365319127).

Almost surely, 2^730638253 is an apocalyptic number.

It is an amenable number.

730638253 is a deficient number, since it is larger than the sum of its proper divisors (1).

730638253 is an equidigital number, since it uses as much as digits as its factorization.

730638253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 730638253 is about 27030.3209932846. The cubic root of 730638253 is about 900.6736738008.

The spelling of 730638253 in words is "seven hundred thirty million, six hundred thirty-eight thousand, two hundred fifty-three".