774079813 has 16 divisors (see below), whose sum is σ = 849886576. Its totient is φ = 700669440.

The previous prime is 774079811. The next prime is 774079847. The reversal of 774079813 is 318970477.

It can be written as a sum of positive squares in 8 ways, for example, as 19918369 + 754161444 = 4463^2 + 27462^2 .

It is a cyclic number.

It is not a de Polignac number, because 774079813 - 2¹ = 774079811 is a prime.

It is a super-2 number, since 2×774079813² = 1198399113788229938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774079811) 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 in 15 ways as a sum of consecutive naturals, for example, 294481 + ... + 297097.

It is an arithmetic number, because the mean of its divisors is an integer number (53117911).

Almost surely, 2^774079813 is an apocalyptic number.

It is an amenable number.

774079813 is a deficient number, since it is larger than the sum of its proper divisors (75806763).

774079813 is a wasteful number, since it uses less digits than its factorization.

774079813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3064.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 774079813 is about 27822.2898590321. The cubic root of 774079813 is about 918.1815897737.

The spelling of 774079813 in words is "seven hundred seventy-four million, seventy-nine thousand, eight hundred thirteen".