775622513 has 2 divisors, whose sum is σ = 775622514. Its totient is φ = 775622512.

The previous prime is 775622489. The next prime is 775622557. The reversal of 775622513 is 315226577.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 574465024 + 201157489 = 23968^2 + 14183^2 .

It is a cyclic number.

It is not a de Polignac number, because 775622513 - 2¹⁰ = 775621489 is a prime.

It is not a weakly prime, because it can be changed into another prime (775622413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387811256 + 387811257.

It is an arithmetic number, because the mean of its divisors is an integer number (387811257).

Almost surely, 2^775622513 is an apocalyptic number.

It is an amenable number.

775622513 is a deficient number, since it is larger than the sum of its proper divisors (1).

775622513 is an equidigital number, since it uses as much as digits as its factorization.

775622513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 38.

The square root of 775622513 is about 27850.0002333932. Note that the first 3 decimals coincide. The cubic root of 775622513 is about 918.7911474128.

The spelling of 775622513 in words is "seven hundred seventy-five million, six hundred twenty-two thousand, five hundred thirteen".