774226513 has 2 divisors, whose sum is σ = 774226514. Its totient is φ = 774226512.

The previous prime is 774226511. The next prime is 774226559. The reversal of 774226513 is 315622477.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 441966529 + 332259984 = 21023^2 + 18228^2 .

It is a cyclic number.

It is not a de Polignac number, because 774226513 - 2¹ = 774226511 is a prime.

Together with 774226511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (774226511) 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, 387113256 + 387113257.

It is an arithmetic number, because the mean of its divisors is an integer number (387113257).

Almost surely, 2^774226513 is an apocalyptic number.

It is an amenable number.

774226513 is a deficient number, since it is larger than the sum of its proper divisors (1).

774226513 is an equidigital number, since it uses as much as digits as its factorization.

774226513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 37.

The square root of 774226513 is about 27824.9261095155. The cubic root of 774226513 is about 918.2395892757.

The spelling of 774226513 in words is "seven hundred seventy-four million, two hundred twenty-six thousand, five hundred thirteen".