730397 has 2 divisors, whose sum is σ = 730398. Its totient is φ = 730396.

The previous prime is 730363. The next prime is 730399. The reversal of 730397 is 793037.

730397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 586756 + 143641 = 766^2 + 379^2 .

It is a cyclic number.

It is not a de Polignac number, because 730397 - 2¹⁰ = 729373 is a prime.

Together with 730399, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (730399) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365198 + 365199.

It is an arithmetic number, because the mean of its divisors is an integer number (365199).

2⁷³⁰³⁹⁷ is an apocalyptic number.

It is an amenable number.

730397 is a deficient number, since it is larger than the sum of its proper divisors (1).

730397 is an equidigital number, since it uses as much as digits as its factorization.

730397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3969, while the sum is 29.

The square root of 730397 is about 854.6326696306. The cubic root of 730397 is about 90.0574530280.

The spelling of 730397 in words is "seven hundred thirty thousand, three hundred ninety-seven".