773808313 has 2 divisors, whose sum is σ = 773808314. Its totient is φ = 773808312.

The previous prime is 773808289. The next prime is 773808319. The reversal of 773808313 is 313808377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 592825104 + 180983209 = 24348^2 + 13453^2 .

It is a cyclic number.

It is not a de Polignac number, because 773808313 - 2⁵ = 773808281 is a prime.

It is not a weakly prime, because it can be changed into another prime (773808319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386904156 + 386904157.

It is an arithmetic number, because the mean of its divisors is an integer number (386904157).

Almost surely, 2^773808313 is an apocalyptic number.

It is an amenable number.

773808313 is a deficient number, since it is larger than the sum of its proper divisors (1).

773808313 is an equidigital number, since it uses as much as digits as its factorization.

773808313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 773808313 is about 27817.4102496979. The cubic root of 773808313 is about 918.0742298486.

The spelling of 773808313 in words is "seven hundred seventy-three million, eight hundred eight thousand, three hundred thirteen".