770813 has 2 divisors, whose sum is σ = 770814. Its totient is φ = 770812.

The previous prime is 770801. The next prime is 770837. The reversal of 770813 is 318077.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 574564 + 196249 = 758^2 + 443^2 .

It is an emirp because it is prime and its reverse (318077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 770813 - 2⁸ = 770557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (770843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385406 + 385407.

It is an arithmetic number, because the mean of its divisors is an integer number (385407).

2⁷⁷⁰⁸¹³ is an apocalyptic number.

It is an amenable number.

770813 is a deficient number, since it is larger than the sum of its proper divisors (1).

770813 is an equidigital number, since it uses as much as digits as its factorization.

770813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 770813 is about 877.9595662671. The cubic root of 770813 is about 91.6888115460.

The spelling of 770813 in words is "seven hundred seventy thousand, eight hundred thirteen".