770628641 has 2 divisors, whose sum is σ = 770628642. Its totient is φ = 770628640.

The previous prime is 770628631. The next prime is 770628643. The reversal of 770628641 is 146826077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 515108416 + 255520225 = 22696^2 + 15985^2 .

It is a cyclic number.

It is not a de Polignac number, because 770628641 - 2⁶ = 770628577 is a prime.

It is a Sophie Germain prime.

Together with 770628643, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (770628643) 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, 385314320 + 385314321.

It is an arithmetic number, because the mean of its divisors is an integer number (385314321).

Almost surely, 2^770628641 is an apocalyptic number.

It is an amenable number.

770628641 is a deficient number, since it is larger than the sum of its proper divisors (1).

770628641 is an equidigital number, since it uses as much as digits as its factorization.

770628641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 770628641 is about 27760.1988645615. The cubic root of 770628641 is about 916.8150108058.

The spelling of 770628641 in words is "seven hundred seventy million, six hundred twenty-eight thousand, six hundred forty-one".