774359820 has 144 divisors (see below), whose sum is σ = 2662863840. Its totient is φ = 180569088.

The previous prime is 774359797. The next prime is 774359851. The reversal of 774359820 is 28953477.

774359820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35752 + ... + 53168.

It is an arithmetic number, because the mean of its divisors is an integer number (18492110).

Almost surely, 2^774359820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 774359820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1331431920).

774359820 is an abundant number, since it is smaller than the sum of its proper divisors (1888504020).

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

774359820 is a wasteful number, since it uses less digits than its factorization.

774359820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17464 (or 17459 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 774359820 is about 27827.3214665012. The cubic root of 774359820 is about 918.2922873505.

The spelling of 774359820 in words is "seven hundred seventy-four million, three hundred fifty-nine thousand, eight hundred twenty".