771226873 has 2 divisors, whose sum is σ = 771226874. Its totient is φ = 771226872.

The previous prime is 771226849. The next prime is 771226909. The reversal of 771226873 is 378622177.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 728298169 + 42928704 = 26987^2 + 6552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-771226873 is a prime.

It is not a weakly prime, because it can be changed into another prime (771226273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385613436 + 385613437.

It is an arithmetic number, because the mean of its divisors is an integer number (385613437).

Almost surely, 2^771226873 is an apocalyptic number.

It is an amenable number.

771226873 is a deficient number, since it is larger than the sum of its proper divisors (1).

771226873 is an equidigital number, since it uses as much as digits as its factorization.

771226873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 197568, while the sum is 43.

The square root of 771226873 is about 27770.9717690973. The cubic root of 771226873 is about 917.0521878263.

The spelling of 771226873 in words is "seven hundred seventy-one million, two hundred twenty-six thousand, eight hundred seventy-three".