771900673 has 2 divisors, whose sum is σ = 771900674. Its totient is φ = 771900672.

The previous prime is 771900671. The next prime is 771900709. The reversal of 771900673 is 376009177.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 715455504 + 56445169 = 26748^2 + 7513^2 .

It is a cyclic number.

It is not a de Polignac number, because 771900673 - 2¹ = 771900671 is a prime.

Together with 771900671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (771900671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385950336 + 385950337.

It is an arithmetic number, because the mean of its divisors is an integer number (385950337).

Almost surely, 2^771900673 is an apocalyptic number.

It is an amenable number.

771900673 is a deficient number, since it is larger than the sum of its proper divisors (1).

771900673 is an equidigital number, since it uses as much as digits as its factorization.

771900673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55566, while the sum is 40.

The square root of 771900673 is about 27783.1004929256. The cubic root of 771900673 is about 917.3191779615.

The spelling of 771900673 in words is "seven hundred seventy-one million, nine hundred thousand, six hundred seventy-three".