778252741 has 12 divisors (see below), whose sum is σ = 958569228. Its totient is φ = 627833472.

The previous prime is 778252733. The next prime is 778252747. The reversal of 778252741 is 147252877.

778252741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 243672100 + 534580641 = 15610^2 + 23121^2 .

It is not a de Polignac number, because 778252741 - 2³ = 778252733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778252747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 466306 + ... + 467971.

It is an arithmetic number, because the mean of its divisors is an integer number (79880769).

Almost surely, 2^778252741 is an apocalyptic number.

It is an amenable number.

778252741 is a deficient number, since it is larger than the sum of its proper divisors (180316487).

778252741 is a wasteful number, since it uses less digits than its factorization.

778252741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934308 (or 934301 counting only the distinct ones).

The product of its digits is 219520, while the sum is 43.

The square root of 778252741 is about 27897.1815959964. The cubic root of 778252741 is about 919.8285522514.

The spelling of 778252741 in words is "seven hundred seventy-eight million, two hundred fifty-two thousand, seven hundred forty-one".