775428473 has 2 divisors, whose sum is σ = 775428474. Its totient is φ = 775428472.

The previous prime is 775428461. The next prime is 775428527. The reversal of 775428473 is 374824577.

775428473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 724847929 + 50580544 = 26923^2 + 7112^2 .

It is a cyclic number.

It is not a de Polignac number, because 775428473 - 2⁴ = 775428457 is a prime.

It is a super-2 number, since 2×775428473² = 1202578633478223458, 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 (775428403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387714236 + 387714237.

It is an arithmetic number, because the mean of its divisors is an integer number (387714237).

Almost surely, 2^775428473 is an apocalyptic number.

It is an amenable number.

775428473 is a deficient number, since it is larger than the sum of its proper divisors (1).

775428473 is an equidigital number, since it uses as much as digits as its factorization.

775428473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1317120, while the sum is 47.

The square root of 775428473 is about 27846.5163530378. The cubic root of 775428473 is about 918.7145220354.

The spelling of 775428473 in words is "seven hundred seventy-five million, four hundred twenty-eight thousand, four hundred seventy-three".