380728697 has 2 divisors, whose sum is σ = 380728698. Its totient is φ = 380728696.

The previous prime is 380728681. The next prime is 380728703. The reversal of 380728697 is 796827083.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321807721 + 58920976 = 17939^2 + 7676^2 .

It is a cyclic number.

It is not a de Polignac number, because 380728697 - 2⁴ = 380728681 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (380721697) 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, 190364348 + 190364349.

It is an arithmetic number, because the mean of its divisors is an integer number (190364349).

Almost surely, 2^380728697 is an apocalyptic number.

It is an amenable number.

380728697 is a deficient number, since it is larger than the sum of its proper divisors (1).

380728697 is an equidigital number, since it uses as much as digits as its factorization.

380728697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 380728697 is about 19512.2704214553. The cubic root of 380728697 is about 724.7783369914.

The spelling of 380728697 in words is "three hundred eighty million, seven hundred twenty-eight thousand, six hundred ninety-seven".