774816768 has 132 divisors (see below), whose sum is σ = 2440973808. Its totient is φ = 234762240.

The previous prime is 774816739. The next prime is 774816793. The reversal of 774816768 is 867618477.

It is a tau number, because it is divible by the number of its divisors (132).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97555 + ... + 105197.

Almost surely, 2^774816768 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 774816768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1220486904).

774816768 is an abundant number, since it is smaller than the sum of its proper divisors (1666157040).

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

774816768 is a wasteful number, since it uses less digits than its factorization.

774816768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7680 (or 7659 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 774816768 is about 27835.5306757389. The cubic root of 774816768 is about 918.4728792421.

The spelling of 774816768 in words is "seven hundred seventy-four million, eight hundred sixteen thousand, seven hundred sixty-eight".