774055840 has 48 divisors (see below), whose sum is σ = 1858709160. Its totient is φ = 304542720.

The previous prime is 774055817. The next prime is 774055847. The reversal of 774055840 is 48550477.

It can be written as a sum of positive squares in 4 ways, for example, as 573889936 + 200165904 = 23956^2 + 14148^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 774055793 and 774055802.

It is not an unprimeable number, because it can be changed into a prime (774055847) 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 7 ways as a sum of consecutive naturals, for example, 29895 + ... + 49414.

Almost surely, 2^774055840 is an apocalyptic number.

It is an amenable number.

774055840 is an abundant number, since it is smaller than the sum of its proper divisors (1084653320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

774055840 is a wasteful number, since it uses less digits than its factorization.

774055840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79385 (or 79377 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 774055840 is about 27821.8590320633. The cubic root of 774055840 is about 918.1721110808.

The spelling of 774055840 in words is "seven hundred seventy-four million, fifty-five thousand, eight hundred forty".