775344013 has 2 divisors, whose sum is σ = 775344014. Its totient is φ = 775344012.

The previous prime is 775343983. The next prime is 775344019. The reversal of 775344013 is 310443577.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 578979844 + 196364169 = 24062^2 + 14013^2 .

It is a cyclic number.

It is not a de Polignac number, because 775344013 - 2¹⁷ = 775212941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 775344013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (775344019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387672006 + 387672007.

It is an arithmetic number, because the mean of its divisors is an integer number (387672007).

Almost surely, 2^775344013 is an apocalyptic number.

It is an amenable number.

775344013 is a deficient number, since it is larger than the sum of its proper divisors (1).

775344013 is an equidigital number, since it uses as much as digits as its factorization.

775344013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 775344013 is about 27844.9997845215. Note that the first 3 decimals coincide. The cubic root of 775344013 is about 918.6811652318.

The spelling of 775344013 in words is "seven hundred seventy-five million, three hundred forty-four thousand, thirteen".