774505481 has 2 divisors, whose sum is σ = 774505482. Its totient is φ = 774505480.

The previous prime is 774505469. The next prime is 774505507. The reversal of 774505481 is 184505477.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 534534400 + 239971081 = 23120^2 + 15491^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-774505481 is a prime.

It is a super-2 number, since 2×774505481² = 1199717480198082722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (774505411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387252740 + 387252741.

It is an arithmetic number, because the mean of its divisors is an integer number (387252741).

Almost surely, 2^774505481 is an apocalyptic number.

It is an amenable number.

774505481 is a deficient number, since it is larger than the sum of its proper divisors (1).

774505481 is an equidigital number, since it uses as much as digits as its factorization.

774505481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 156800, while the sum is 41.

The square root of 774505481 is about 27829.9385734141. The cubic root of 774505481 is about 918.3498622158.

The spelling of 774505481 in words is "seven hundred seventy-four million, five hundred five thousand, four hundred eighty-one".