774792816 has 240 divisors, whose sum is σ = 2485079040. Its totient is φ = 203673600.

The previous prime is 774792787. The next prime is 774792817. The reversal of 774792816 is 618297477.

774792816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×774792816³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774792817) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7671166 + ... + 7671266.

It is an arithmetic number, because the mean of its divisors is an integer number (10354496).

Almost surely, 2^774792816 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 774792816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1242539520).

774792816 is an abundant number, since it is smaller than the sum of its proper divisors (1710286224).

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

774792816 is a wasteful number, since it uses less digits than its factorization.

774792816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 209 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 51.

The square root of 774792816 is about 27835.1004309307. The cubic root of 774792816 is about 918.4634148586.

The spelling of 774792816 in words is "seven hundred seventy-four million, seven hundred ninety-two thousand, eight hundred sixteen".