773410721 has 2 divisors, whose sum is σ = 773410722. Its totient is φ = 773410720.

The previous prime is 773410679. The next prime is 773410753. The reversal of 773410721 is 127014377.

773410721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (773410753) can be obtained adding 773410721 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 739024225 + 34386496 = 27185^2 + 5864^2 .

It is a cyclic number.

It is not a de Polignac number, because 773410721 - 2¹⁰ = 773409697 is a prime.

It is not a weakly prime, because it can be changed into another prime (773412721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386705360 + 386705361.

It is an arithmetic number, because the mean of its divisors is an integer number (386705361).

Almost surely, 2^773410721 is an apocalyptic number.

It is an amenable number.

773410721 is a deficient number, since it is larger than the sum of its proper divisors (1).

773410721 is an equidigital number, since it uses as much as digits as its factorization.

773410721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 773410721 is about 27810.2628718249. The cubic root of 773410721 is about 917.9169637239.

The spelling of 773410721 in words is "seven hundred seventy-three million, four hundred ten thousand, seven hundred twenty-one".