775382816 has 96 divisors (see below), whose sum is σ = 1700319600. Its totient is φ = 347842560.

The previous prime is 775382809. The next prime is 775382827. The reversal of 775382816 is 618283577.

It is a happy number.

775382816 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 8 ways, for example, as 351187600 + 424195216 = 18740^2 + 20596^2 .

It is a super-2 number, since 2×775382816² = 1202437022696179712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2882330 + ... + 2882598.

Almost surely, 2^775382816 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 775382816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (850159800).

775382816 is an abundant number, since it is smaller than the sum of its proper divisors (924936784).

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

775382816 is a wasteful number, since it uses less digits than its factorization.

775382816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 325 counting only the distinct ones).

The product of its digits is 564480, while the sum is 47.

The square root of 775382816 is about 27845.6965436313. The cubic root of 775382816 is about 918.6964904680.

The spelling of 775382816 in words is "seven hundred seventy-five million, three hundred eighty-two thousand, eight hundred sixteen".