380708561 has 2 divisors, whose sum is σ = 380708562. Its totient is φ = 380708560.

The previous prime is 380708521. The next prime is 380708609. The reversal of 380708561 is 165807083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221444161 + 159264400 = 14881^2 + 12620^2 .

It is a cyclic number.

It is not a de Polignac number, because 380708561 - 2¹⁴ = 380692177 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (380708521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190354280 + 190354281.

It is an arithmetic number, because the mean of its divisors is an integer number (190354281).

Almost surely, 2^380708561 is an apocalyptic number.

It is an amenable number.

380708561 is a deficient number, since it is larger than the sum of its proper divisors (1).

380708561 is an equidigital number, since it uses as much as digits as its factorization.

380708561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 380708561 is about 19511.7544316240. The cubic root of 380708561 is about 724.7655593942.

The spelling of 380708561 in words is "three hundred eighty million, seven hundred eight thousand, five hundred sixty-one".