730771397 has 2 divisors, whose sum is σ = 730771398. Its totient is φ = 730771396.

The previous prime is 730771361. The next prime is 730771411. The reversal of 730771397 is 793177037.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 516471076 + 214300321 = 22726^2 + 14639^2 .

It is an emirp because it is prime and its reverse (793177037) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 730771397 - 2¹⁶ = 730705861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (730773397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365385698 + 365385699.

It is an arithmetic number, because the mean of its divisors is an integer number (365385699).

Almost surely, 2^730771397 is an apocalyptic number.

It is an amenable number.

730771397 is a deficient number, since it is larger than the sum of its proper divisors (1).

730771397 is an equidigital number, since it uses as much as digits as its factorization.

730771397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194481, while the sum is 44.

The square root of 730771397 is about 27032.7837449272. The cubic root of 730771397 is about 900.7283803133.

The spelling of 730771397 in words is "seven hundred thirty million, seven hundred seventy-one thousand, three hundred ninety-seven".